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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>SecureGen — User Guide</title>
<link href="https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@300;400;500&display=swap" rel="stylesheet">
<style>
:root {
--bg: #0a0a0f;
--surface: #111118;
--border: #1e1e2e;
--accent: #00e5ff;
--accent2: #7c3aed;
--text: #c9d1d9;
--text-dim: #586069;
--text-bright: #e6edf3;
--warn: #f59e0b;
--danger: #ef4444;
--success: #22c55e;
--mono: 'IBM Plex Mono', monospace;
--sans: 'IBM Plex Sans', sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
background: var(--bg);
color: var(--text);
font-family: var(--sans);
font-weight: 300;
line-height: 1.7;
min-height: 100vh;
}
/* Layout */
.layout { display: flex; min-height: 100vh; }
/* Sidebar */
.sidebar {
width: 260px;
min-width: 260px;
background: var(--surface);
border-right: 1px solid var(--border);
position: sticky;
top: 0;
height: 100vh;
overflow-y: auto;
padding: 2rem 0;
}
.sidebar-logo {
padding: 0 1.5rem 1.5rem;
border-bottom: 1px solid var(--border);
margin-bottom: 1rem;
}
.sidebar-logo .device-name {
font-family: var(--mono);
font-size: 0.65rem;
color: var(--accent);
letter-spacing: 0.15em;
text-transform: uppercase;
display: block;
margin-bottom: 0.2rem;
}
.sidebar-logo h1 {
font-family: var(--mono);
font-size: 1.1rem;
font-weight: 600;
color: var(--text-bright);
}
.nav-section {
padding: 0.5rem 0;
}
.nav-label {
font-family: var(--mono);
font-size: 0.6rem;
letter-spacing: 0.15em;
text-transform: uppercase;
color: var(--text-dim);
padding: 0.4rem 1.5rem;
display: block;
}
.nav-link {
display: block;
padding: 0.35rem 1.5rem;
color: var(--text-dim);
text-decoration: none;
font-size: 0.85rem;
font-weight: 400;
border-left: 2px solid transparent;
transition: all 0.15s;
}
.nav-link:hover {
color: var(--text-bright);
background: rgba(0,229,255,0.04);
border-left-color: var(--accent);
}
.nav-link.active {
color: var(--accent);
border-left-color: var(--accent);
background: rgba(0,229,255,0.06);
}
/* Main content */
.main {
flex: 1;
max-width: 820px;
padding: 3rem 3.5rem;
overflow-x: hidden;
}
/* Section */
.section {
margin-bottom: 4rem;
scroll-margin-top: 2rem;
}
.section-header {
display: flex;
align-items: center;
gap: 0.75rem;
margin-bottom: 1.5rem;
padding-bottom: 0.75rem;
border-bottom: 1px solid var(--border);
}
.section-num {
font-family: var(--mono);
font-size: 0.65rem;
color: var(--accent);
background: rgba(0,229,255,0.08);
border: 1px solid rgba(0,229,255,0.2);
padding: 0.15rem 0.5rem;
border-radius: 2px;
letter-spacing: 0.05em;
}
h2 {
font-family: var(--mono);
font-size: 1.05rem;
font-weight: 600;
color: var(--text-bright);
letter-spacing: 0.02em;
}
h3 {
font-family: var(--mono);
font-size: 0.85rem;
font-weight: 500;
color: var(--accent);
letter-spacing: 0.05em;
margin: 1.75rem 0 0.75rem;
text-transform: uppercase;
}
h4 {
font-size: 0.9rem;
font-weight: 500;
color: var(--text-bright);
margin: 1.25rem 0 0.5rem;
}
p {
font-size: 0.9rem;
color: var(--text);
margin-bottom: 0.75rem;
}
/* Tables */
.table-wrap { overflow-x: auto; margin: 1rem 0; }
table {
width: 100%;
border-collapse: collapse;
font-size: 0.85rem;
}
th {
font-family: var(--mono);
font-size: 0.65rem;
letter-spacing: 0.1em;
text-transform: uppercase;
color: var(--text-dim);
text-align: left;
padding: 0.6rem 1rem;
background: rgba(255,255,255,0.02);
border-bottom: 1px solid var(--border);
}
td {
padding: 0.6rem 1rem;
border-bottom: 1px solid rgba(255,255,255,0.04);
color: var(--text);
vertical-align: top;
}
tr:last-child td { border-bottom: none; }
td:first-child {
font-family: var(--mono);
font-size: 0.8rem;
color: var(--text-bright);
white-space: nowrap;
}
/* Key badge */
.key {
display: inline-block;
font-family: var(--mono);
font-size: 0.72rem;
background: var(--surface);
border: 1px solid var(--border);
border-bottom: 2px solid rgba(255,255,255,0.15);
padding: 0.1rem 0.45rem;
border-radius: 3px;
color: var(--text-bright);
white-space: nowrap;
}
/* Callouts */
.callout {
border-left: 3px solid;
padding: 0.75rem 1rem;
margin: 1rem 0;
border-radius: 0 4px 4px 0;
font-size: 0.85rem;
}
.callout-warn {
border-color: var(--warn);
background: rgba(245,158,11,0.06);
color: #fcd34d;
}
.callout-info {
border-color: var(--accent);
background: rgba(0,229,255,0.05);
color: #67e8f9;
}
.callout-danger {
border-color: var(--danger);
background: rgba(239,68,68,0.06);
color: #fca5a5;
}
.callout strong {
font-family: var(--mono);
font-size: 0.7rem;
letter-spacing: 0.1em;
text-transform: uppercase;
display: block;
margin-bottom: 0.25rem;
opacity: 0.8;
}
/* Mode cards */
.mode-grid {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 1rem;
margin: 1rem 0;
}
.mode-card {
background: var(--surface);
border: 1px solid var(--border);
border-radius: 6px;
padding: 1.25rem;
}
.mode-card .mode-title {
font-family: var(--mono);
font-size: 0.75rem;
font-weight: 600;
color: var(--text-bright);
letter-spacing: 0.05em;
margin-bottom: 0.25rem;
}
.mode-card .mode-trigger {
font-size: 0.75rem;
color: var(--text-dim);
margin-bottom: 0.75rem;
padding-bottom: 0.75rem;
border-bottom: 1px solid var(--border);
}
.mode-card ul {
list-style: none;
font-size: 0.8rem;
}
.mode-card li {
padding: 0.15rem 0;
color: var(--text);
}
.mode-card li::before {
content: '✓ ';
color: var(--success);
font-family: var(--mono);
}
.mode-card li.no::before {
content: '✗ ';
color: var(--text-dim);
}
.mode-card li.no { color: var(--text-dim); }
/* Steps */
.steps { list-style: none; counter-reset: step; margin: 0.75rem 0; }
.steps li {
counter-increment: step;
display: flex;
gap: 0.75rem;
align-items: flex-start;
padding: 0.5rem 0;
font-size: 0.88rem;
}
.steps li::before {
content: counter(step);
font-family: var(--mono);
font-size: 0.7rem;
font-weight: 600;
color: var(--accent);
background: rgba(0,229,255,0.1);
border: 1px solid rgba(0,229,255,0.25);
min-width: 1.5rem;
height: 1.5rem;
display: flex;
align-items: center;
justify-content: center;
border-radius: 2px;
flex-shrink: 0;
margin-top: 0.1rem;
}
/* Inline code */
code {
font-family: var(--mono);
font-size: 0.8rem;
background: rgba(255,255,255,0.06);
border: 1px solid var(--border);
padding: 0.1rem 0.35rem;
border-radius: 3px;
color: var(--accent);
}
/* Responsive */
@media (max-width: 900px) {
.sidebar { display: none; }
.main { padding: 2rem 1.5rem; }
.mode-grid { grid-template-columns: 1fr; }
}
</style>
</head>
<body>
<div class="layout">
<!-- Sidebar -->
<nav class="sidebar">
<div class="sidebar-logo" style="position:relative;">
<span class="device-name">ESP32 T-Display</span>
<h1>SecureGen</h1>
<div style="position:absolute;bottom:0;right:0.5rem;font-size:0.8rem;">
<strong style="color:var(--accent);">🇬🇧</strong>
<a href="GUIDE.ru.html" style="color:var(--text-dim);text-decoration:none;">🇷🇺</a>
</div>
</div>
<div class="nav-section">
<span class="nav-label">Device</span>
<a href="#buttons" class="nav-link">Buttons</a>
<a href="#first-boot" class="nav-link">First Boot</a>
<a href="#modes" class="nav-link">Operating Modes</a>
<a href="#navigation" class="nav-link">Navigation</a>
<a href="#ble" class="nav-link">HID Transfer</a>
<a href="#factory-reset" class="nav-link">Factory Reset</a>
</div>
<div class="nav-section">
<span class="nav-label">Web Cabinet</span>
<a href="#web-access" class="nav-link">Access & Login</a>
<a href="#widget-bar" class="nav-link">Widget Bar</a>
<a href="#keys" class="nav-link">Keys (TOTP / HOTP)</a>
<a href="#passwords" class="nav-link">Passwords</a>
<a href="#display" class="nav-link">Display</a>
<a href="#pin" class="nav-link">PIN Settings</a>
<a href="#hidden-space" class="nav-link">Hidden Space</a>
<a href="#settings" class="nav-link">Settings</a>
</div>
</nav>
<!-- Main -->
<main class="main">
<!-- BUTTONS -->
<div class="section" id="buttons">
<div class="section-header">
<span class="section-num">01</span>
<h2>Buttons</h2>
</div>
<div class="table-wrap">
<table>
<thead><tr><th>Button</th><th>Description</th></tr></thead>
<tbody>
<tr><td><span class="key">▲ Top</span></td><td>Navigate up / increment digit</td></tr>
<tr><td><span class="key">▼ Bottom</span></td><td>Navigate down / next digit</td></tr>
<tr><td><span class="key">RST</span></td><td>Hardware reboot — same as power cycling the device</td></tr>
</tbody>
</table>
</div>
</div>
<!-- FIRST BOOT -->
<div class="section" id="first-boot">
<div class="section-header">
<span class="section-num">02</span>
<h2>First Boot</h2>
</div>
<h3>Step 1 — Create PIN</h3>
<p>On first power-on the device prompts you to create a PIN code. This PIN encrypts the master device key — it is required on every startup.</p>
<h3>Step 2 — Connect to WiFi</h3>
<p>After PIN creation the device starts an Access Point. Connect to it from your phone or computer. A captive portal opens automatically — select your WiFi network and enter the password. The device reboots after saving.</p>
<div class="callout callout-info">
<strong>Note</strong>
WiFi can also be configured later through the web cabinet in AP mode, before the automatic WiFi setup runs.
</div>
<h3>Step 3 — Web cabinet starts automatically</h3>
<p>On first boot after WiFi setup, the web server starts automatically. Enter the device IP or mDNS address in your browser to complete registration.</p>
</div>
<!-- MODES -->
<div class="section" id="modes">
<div class="section-header">
<span class="section-num">03</span>
<h2>Operating Modes</h2>
</div>
<p>After entering the PIN on every boot, the device shows a mode selection prompt. Two buttons appear on screen — they represent the two non-default network modes. The third mode (your configured default) starts automatically after a <strong>2-second</strong> timeout if no button is pressed.</p>
<p>The default mode on timeout is configurable in <strong>Settings → Boot Mode</strong>. Factory default is WiFi Client. Each button press resets the timeout by 2 seconds.</p>
<div class="mode-grid">
<div class="mode-card">
<div class="mode-title">AP Mode</div>
<div class="mode-trigger">Press <span class="key">▲ Top</span></div>
<ul>
<li>Passwords</li>
<li>HOTP codes</li>
<li>Web cabinet</li>
<li>HID transfer (BLE / USB on S3)</li>
<li>TOTP (DS3231 required)</li>
</ul>
</div>
<div class="mode-card">
<div class="mode-title">Offline Mode</div>
<div class="mode-trigger">Press <span class="key">▼ Bottom</span></div>
<ul>
<li>Passwords</li>
<li>HOTP codes</li>
<li>HID transfer (BLE / USB on S3)</li>
<li>TOTP (DS3231 required)</li>
<li class="no">Web cabinet</li>
</ul>
</div>
<div class="mode-card">
<div class="mode-title">WiFi Mode</div>
<div class="mode-trigger">No button — auto</div>
<ul>
<li>Passwords</li>
<li>HOTP codes</li>
<li>TOTP codes</li>
<li>Web cabinet (opt.)</li>
<li>HID transfer (BLE / USB on S3, no web server)</li>
</ul>
</div>
</div>
<h3>WiFi Mode — Web Server</h3>
<p>After connecting to WiFi and syncing time via NTP, the device asks: <strong>enable web server?</strong></p>
<div class="table-wrap">
<table>
<thead><tr><th>State</th><th>Available</th></tr></thead>
<tbody>
<tr><td>Web server OFF</td><td>TOTP, HOTP, passwords, HID transfer (BLE / USB on S3)</td></tr>
<tr><td>Web server ON</td><td>TOTP, HOTP, passwords, web cabinet — HID transfer disabled</td></tr>
</tbody>
</table>
</div>
</div>
<!-- NAVIGATION -->
<div class="section" id="navigation">
<div class="section-header">
<span class="section-num">04</span>
<h2>Device Navigation</h2>
</div>
<h3>PIN Entry Screen</h3>
<div class="table-wrap">
<table>
<thead><tr><th>Action</th><th>Result</th></tr></thead>
<tbody>
<tr><td><span class="key">▲ Top</span></td><td>Increment current digit</td></tr>
<tr><td><span class="key">▼ Bottom</span></td><td>Move to next digit</td></tr>
<tr><td>Double press <span class="key">▼ Bottom</span></td><td>Go back one digit</td></tr>
<tr><td>Hold both buttons</td><td>Power off — enters deep sleep. Press <span class="key">▼ Bottom</span> to wake (PIN required).</td></tr>
</tbody>
</table>
</div>
<h3>TOTP / HOTP Screen</h3>
<div class="table-wrap">
<table>
<thead><tr><th>Action</th><th>Result</th></tr></thead>
<tbody>
<tr><td><span class="key">▲ Top</span></td><td>Previous key</td></tr>
<tr><td><span class="key">▼ Bottom</span></td><td>Next key</td></tr>
<tr><td>Hold both (on HOTP)</td><td>Advance counter — get next HOTP code</td></tr>
<tr><td>Hold both (on TOTP)</td><td>No action</td></tr>
<tr><td>Hold <span class="key">▲ Top</span> 5 sec</td><td>Switch to password manager</td></tr>
<tr><td>Hold <span class="key">▼ Bottom</span></td><td>Shutdown — enters deep sleep. Press <span class="key">▼ Bottom</span> to wake (PIN required).</td></tr>
</tbody>
</table>
</div>
<h3>Password Manager Screen</h3>
<div class="table-wrap">
<table>
<thead><tr><th>Action</th><th>Result</th></tr></thead>
<tbody>
<tr><td><span class="key">▲ Top</span></td><td>Previous password</td></tr>
<tr><td><span class="key">▼ Bottom</span></td><td>Next password</td></tr>
<tr><td>Hold both buttons</td><td>Start HID transfer — types the selected password as keyboard input. On T-Display-S3: a prompt appears to choose BLE HID or USB HID before transmission.</td></tr>
<tr><td>Hold <span class="key">▲ Top</span> 5 sec</td><td>Switch back to TOTP / HOTP</td></tr>
<tr><td>Hold <span class="key">▼ Bottom</span></td><td>Shutdown — enters deep sleep. Press <span class="key">▼ Bottom</span> to wake (PIN required).</td></tr>
</tbody>
</table>
</div>
</div>
<!-- BLE -->
<div class="section" id="ble">
<div class="section-header">
<span class="section-num">05</span>
<h2>HID Password Transfer</h2>
</div>
<p>The device acts as a hardware keyboard and types the selected password directly — no app required on the receiving device.</p>
<p><strong>T-Display ESP32</strong> (classic): BLE HID only.<br>
<strong>T-Display-S3</strong>: BLE HID or USB HID. When both buttons are held, a prompt appears on screen to select the output mode. The device pre-selects the configured default — wait for the auto-selection timer, or press a button to switch before transmission begins. USB HID requires no pairing or drivers.</p>
<div class="table-wrap">
<table>
<thead><tr><th>Mode</th><th>BLE Available</th></tr></thead>
<tbody>
<tr><td>Offline</td><td>✓ Yes</td></tr>
<tr><td>AP</td><td>✓ Yes</td></tr>
<tr><td>WiFi — web server OFF</td><td>✓ Yes</td></tr>
<tr><td>WiFi — web server ON</td><td>✗ No</td></tr>
</tbody>
</table>
</div>
<div class="callout callout-info">
<strong>T-Display-S3 — USB HID</strong>
USB HID is available under the same conditions as BLE HID. The HID output prompt (BLE or USB) appears after holding both buttons. Default mode is configurable in <strong>Settings → HID Mode</strong>.
</div>
<h3>First Connection (Bonding)</h3>
<ol class="steps">
<li>In the password manager screen, hold both buttons</li>
<li>A PIN code appears on the device display</li>
<li>On your phone, select the device in Bluetooth settings and enter that PIN</li>
<li>Bonding is saved — next time no PIN is needed</li>
</ol>
<h3>Sending a Password</h3>
<ol class="steps">
<li>Navigate to the desired password using <span class="key">▲</span> / <span class="key">▼</span></li>
<li>The password is transmitted to the phone as keyboard input</li>
<li>Press <span class="key">▲ Top</span> to exit BLE and return to passwords</li>
</ol>
<div class="callout callout-info">
<strong>Note</strong>
If a hardware BLE PIN is configured, the device will ask you to confirm it on-screen before transmitting.
</div>
</div>
<!-- FACTORY RESET -->
<div class="section" id="factory-reset">
<div class="section-header">
<span class="section-num">06</span>
<h2>Factory Reset</h2>
</div>
<ol class="steps">
<li>Press <span class="key">RST</span></li>
<li>Immediately after reboot — hold both buttons simultaneously</li>
</ol>
<div class="callout callout-danger">
<strong>Warning</strong>
Factory reset permanently deletes all TOTP/HOTP keys, passwords, WiFi credentials, sessions, and PIN. Export your data before resetting if you need to restore it.
</div>
</div>
<!-- WEB ACCESS -->
<div class="section" id="web-access">
<div class="section-header">
<span class="section-num">07</span>
<h2>Web Cabinet — Access & Login</h2>
</div>
<h3>How to Open</h3>
<p>Open the device IP address in your browser, or use the mDNS address: <code>http://t-disp-totp.local</code> (hostname configurable in Settings).</p>
<p>In AP mode a captive portal opens automatically when you connect to the device's WiFi network.</p>
<h3>Registration</h3>
<p>On first access the device redirects to the registration page. Create a username and password, then log in with the same credentials.</p>
<div class="callout callout-warn">
<strong>Known Bug</strong>
The registration or login page may appear blank on first load. Refresh the page and it will display correctly.
</div>
<div class="callout callout-danger">
<strong>Login Attempts</strong>
Multiple failed login attempts will lock access until the device is rebooted.
</div>
</div>
<!-- WIDGET BAR -->
<div class="section" id="widget-bar">
<div class="section-header">
<span class="section-num">07b</span>
<h2>Widget Bar</h2>
</div>
<p>The widget bar is a thin strip at the top of the web cabinet interface. It contains two elements on opposite sides.</p>
<div class="table-wrap">
<table>
<thead><tr><th>Element</th><th>Location</th><th>Description</th></tr></thead>
<tbody>
<tr><td>🔋 Battery</td><td>Left side</td><td>Shows current battery charge level (device must have a 3.7V LiPo battery connected). Displays percentage and voltage. While charging, an animated icon is shown.</td></tr>
<tr><td>🌐 Language</td><td>Right side</td><td>Flag icon with a dropdown — switch the web cabinet interface language. Available languages: English, Russian, German, Chinese, Spanish. Selection is saved in the browser and persists across sessions.</td></tr>
</tbody>
</table>
</div>
<div class="callout callout-info">
<strong>Language Switcher</strong>
Changing the language updates all labels, buttons, and notifications instantly — no page reload required. The setting is stored per browser, not on the device.
</div>
</div>
<!-- KEYS -->
<div class="section" id="keys">
<div class="section-header">
<span class="section-num">08</span>
<h2>Keys — TOTP & HOTP</h2>
</div>
<h3>Adding a Key</h3>
<p>Enter a name and the secret key. Default settings: TOTP, SHA1, 6 digits, 30 second interval.</p>
<p>Click <strong>Additional Settings</strong> to change:</p>
<div class="table-wrap">
<table>
<thead><tr><th>Parameter</th><th>Options</th></tr></thead>
<tbody>
<tr><td>Type</td><td>TOTP, HOTP</td></tr>
<tr><td>Algorithm</td><td>SHA1, SHA256, SHA512</td></tr>
<tr><td>Code length</td><td>6 or 8 digits</td></tr>
<tr><td>TOTP interval</td><td>30 or 60 seconds</td></tr>
</tbody>
</table>
</div>
<p>You can also add a key by uploading a screenshot of its QR code.</p>
<h3>Key Actions</h3>
<div class="table-wrap">
<table>
<thead><tr><th>Action</th><th>Result</th></tr></thead>
<tbody>
<tr><td>Tap the code</td><td>Copy code to clipboard</td></tr>
<tr><td>QR button</td><td>Display QR code on device screen for 30 seconds — scan to export to another authenticator app</td></tr>
<tr><td>Next (HOTP only)</td><td>Advance counter and generate next code</td></tr>
<tr><td>Delete</td><td>Remove key permanently</td></tr>
</tbody>
</table>
</div>
<div class="callout callout-info">
<strong>Scanning the QR</strong>
The device screen is small. Enable your phone's flashlight and zoom in for a cleaner scan.
</div>
<h3>Export & Import</h3>
<ol class="steps">
<li>Click <strong>Activate Export</strong> and enter your web cabinet password</li>
<li>Select the keys to export and click <strong>Export</strong> — a <code>.enc</code> file downloads</li>
<li>To import: activate export again, click <strong>Import</strong>, upload the <code>.enc</code> file</li>
</ol>
<p>The <code>.enc</code> file can also be opened in <code>decrypt_export.html</code> (project root) — an offline editor for viewing, decrypting, and editing keys on your computer.</p>
</div>
<!-- PASSWORDS -->
<div class="section" id="passwords">
<div class="section-header">
<span class="section-num">09</span>
<h2>Passwords</h2>
</div>
<h3>Adding a Password</h3>
<p>Enter a name and password. Use the generator icon to create one:</p>
<div class="table-wrap">
<table>
<thead><tr><th>Control</th><th>Function</th></tr></thead>
<tbody>
<tr><td>Slider</td><td>Password length: 1 – 64 characters</td></tr>
<tr><td>Regenerate</td><td>Generate a new random password</td></tr>
<tr><td>Save</td><td>Copy generated password into the input field</td></tr>
</tbody>
</table>
</div>
<p>Click <strong>Save Password</strong> to add it to the list.</p>
<h3>Password Categories</h3>
<p>Each password can be assigned a category to organise your vault. A category badge appears above the password name in the list.</p>
<table>
<thead><tr><th>Category</th><th>Use for</th></tr></thead>
<tbody>
<tr><td>📋 None</td><td>Uncategorised (default)</td></tr>
<tr><td>🌐 Web</td><td>Website logins</td></tr>
<tr><td>📱 App</td><td>Mobile or desktop applications</td></tr>
<tr><td>🖥 Local</td><td>Local system / device credentials</td></tr>
<tr><td>🔑 Key / Token</td><td>API keys, tokens, secrets</td></tr>
</tbody>
</table>
<p>To assign a category:</p>
<ul>
<li><strong>Quick change:</strong> click the category badge directly on a password row — a small popup appears, select a new category, it saves immediately.</li>
<li><strong>Edit modal:</strong> open Edit for any password — the category selector appears above the strength indicator. Change and click Save.</li>
<li><strong>Add form:</strong> select a category before clicking Add Password.</li>
</ul>
<p>Use the category filter bar above the password table to show only entries from a selected category. Click <strong>📋 All</strong> to show everything.</p>
<h4>Auto-Send (Enter)</h4>
<p>When enabled, the device automatically presses <kbd>Enter</kbd> after typing the password via BLE or USB HID keyboard. Useful for login forms where the password field is the last input. Enable only when the target application expects Enter to submit — in other contexts it may trigger unintended actions.</p>
<p>The badge <code>ENT</code> appears on the device screen when a password has Auto-Send enabled.</p>
<h4>Send Login Before Password</h4>
<p>When enabled, the device types the login username first, then presses <kbd>Tab</kbd> or <kbd>Enter</kbd> (configurable), waits a short delay, and finally types the password. Useful for login forms that require both fields filled automatically.</p>
<div class="table-wrap">
<table>
<thead><tr><th>Option</th><th>Description</th></tr></thead>
<tbody>
<tr><td>Login</td><td>The username or email to type before the password</td></tr>
<tr><td>Navigation mode</td><td><strong>Enter</strong> — press Enter after typing login (moves to next screen or submits). <strong>Tab</strong> — press Tab after typing login (moves to next field, e.g., password field on same page).</td></tr>
<tr><td>Delay before password (ms)</td><td>Wait time in milliseconds after pressing Tab/Enter before typing the password. Default: 300 ms. Only relevant in Enter mode. Adjust if the target application needs more time to load the next screen.</td></tr>
</tbody>
</table>
</div>
<p>The badge <code>LOGIN ⏎</code> (Enter mode) or <code>LOGIN ⇥</code> (Tab mode) appears on the device screen and in the web cabinet when a password has Send Login enabled.</p>
<div class="callout callout-warn">
<strong>Navigation Mode</strong>
Use <strong>Tab</strong> for single-page forms where username and password fields are on the same screen.
Use <strong>Enter</strong> for multi-step login flows where the username screen is separate from the password screen — in this case, increase the delay if the next page is slow to load.
</div>
<h4>Wildcard Passwords (Random On-Device Generation)</h4>
<p>A wildcard password is a special entry type that generates a cryptographically random password on-device each time it's typed via HID keyboard. The generated password never appears in the web interface and is never stored — it exists only during the moment of typing.</p>
<div class="table-wrap">
<table>
<thead><tr><th>Property</th><th>Description</th></tr></thead>
<tbody>
<tr><td>Entry Name</td><td>Always shown as <code>random</code> (system-managed, cannot be changed)</td></tr>
<tr><td>Password Field</td><td>Shows placeholder <code>[wildcard]</code> — the real password is generated during HID transmission only</td></tr>
<tr><td>Length</td><td>Configurable from 4 to 64 characters (Edit → Wildcard Password Length)</td></tr>
<tr><td>Character Set</td><td>Alphanumeric + symbols (A-Z, a-z, 0-9, !@#$%^&*()_+-=[]{}|;:,.<>?)</td></tr>
<tr><td>Categories</td><td>Not available for wildcard entries</td></tr>
<tr><td>Auto-Send / Login</td><td>Not available for wildcard entries</td></tr>
<tr><td>Copy Button</td><td>Disabled — wildcard passwords cannot be copied or viewed</td></tr>
<tr><td>Device Badge</td><td>🎲 <code>RND</code> badge (magenta) appears on screen</td></tr>
<tr><td>Web Badge</td><td>🎲 <code>Wildcard</code> badge appears in web cabinet</td></tr>
</tbody>
</table>
</div>
<p><strong>Use cases:</strong></p>
<ul>
<li><strong>Password rotation under pressure</strong> — when you need to change a password immediately (e.g., security breach, forced reset, suspicious activity) but don't have time to think of a strong one. The device generates a cryptographically random password on-the-fly.</li>
<li>High-security accounts where you want maximum entropy without ever exposing the password to any interface</li>
<li>Services that don't support password managers (e.g., gaming consoles, smart TVs, set-top boxes)</li>
<li>Accounts where you prefer cryptographic randomness over memorability</li>
<li>Temporary access credentials that change frequently</li>
</ul>
<p><strong>To add a wildcard password:</strong></p>
<ol class="steps">
<li>In the Add Password form, check the <strong>Password Wildcard</strong> checkbox</li>
<li>Set the desired length (default: 16)</li>
<li>Click <strong>Add Password</strong></li>
<li>The entry appears with name <code>random</code> and a 🎲 badge</li>
</ol>
<div class="callout callout-info">
<strong>Singleton Constraint</strong>
Only one wildcard password can exist in the vault at a time. If you try to create a second one, an error message appears. Delete the existing wildcard entry before creating a new one.
</div>
<div class="callout callout-warn">
<strong>Editing Wildcard Passwords</strong>
You can only change the <strong>length</strong> (Edit → Wildcard Password Length). All other fields (name, password value, category, auto-send, login) are locked. To "edit" other properties, delete the wildcard entry and create a new regular password instead.
</div>
<div class="callout callout-danger">
<strong>Important</strong>
Since wildcard passwords are generated fresh each time, you cannot use them for accounts where you need to log in through the web interface or type the password manually. They work only via HID typing from the device. If you lose the device or wipe it, you cannot recover the wildcard password — reset the account through the service's password recovery flow.
</div>
<h3>Password Actions</h3>
<div class="table-wrap">
<table>
<thead><tr><th>Button</th><th>Action</th></tr></thead>
<tbody>
<tr><td>Copy</td><td>Securely fetch password from device and copy to clipboard</td></tr>
<tr><td>Edit</td><td>Open edit form — change name or password and save</td></tr>
<tr><td>Remove</td><td>Delete password permanently</td></tr>
</tbody>
</table>
</div>
<h3>Password Security Badges</h3>
<p>While browsing passwords on the device screen, a row of security indicators is shown below the masked password. Badges appear only when relevant — a clean screen means no issues detected.</p>
<div class="table-wrap">
<table>
<thead><tr><th>Badge</th><th>Meaning</th></tr></thead>
<tbody>
<tr><td>🔒🔒🔒 Locks</td><td>Password strength: 1 lock (red) = weak, 2 locks (yellow) = medium, 3 locks (yellow) = strong. Based on length and character diversity.</td></tr>
<tr><td>🌐 📱 🖥 🔑</td><td>Category badge — shown above the password name. Click to change category inline.</td></tr>
<tr><td>DUP</td><td>Another entry in the vault has an identical password. Detected without decrypting other entries.</td></tr>
<tr><td>PIN</td><td>Password consists entirely of digits — significantly reduced entropy regardless of length.</td></tr>
<tr><td>NAME</td><td>Password contains the entry name (or part of it) as a substring, case-insensitive.</td></tr>
</tbody>
</table>
</div>
<div class="callout callout-info">
<strong>Migration</strong>
Entries created before this feature was added are migrated automatically on first boot — no action required.
</div>
<h3>Export & Import</h3>
<p>Works identically to key export — activate, enter password, download <code>.enc</code> file. Compatible with <code>decrypt_export.html</code>.</p>
</div>
<!-- DISPLAY -->
<div class="section" id="display">
<div class="section-header">
<span class="section-num">10</span>
<h2>Display Settings</h2>
</div>
<div class="table-wrap">
<table>
<thead><tr><th>Setting</th><th>Options</th></tr></thead>
<tbody>
<tr><td>Theme</td><td>Light, Dark</td></tr>
<tr><td>Timezone</td><td>Used for the clock widget shown on device screen</td></tr>
<tr><td>Splash screen</td><td>Image shown on boot: SecureGen (original), Blade Runner 2044, Combs</td></tr>
<tr><td>Auto-dim</td><td>Time until the display brightness drops to 20%. Useful for saving battery while keeping the screen on. Must be shorter than Screen timeout. Set to <em>Never</em> to disable.</td></tr>
<tr><td>Screen timeout</td><td>Time until the display turns off and the device enters low-power pseudo-sleep (CPU slowed to 40 MHz, TFT controller suspended). Press either button to wake — no PIN required. Set to <strong>Never</strong> to keep the screen on indefinitely.</td></tr>
<tr><td>Auto Lock</td><td>Time after which the device enters deep sleep and wipes all sensitive data from RAM. Requires PIN on wake. Counted from last activity — starts after the device enters pseudo-sleep when screen timeout is enabled, or directly from last button press when screen timeout is Never. Must be longer than screen timeout when both are non-zero. Set to <strong>Never</strong> to disable. Wake from deep sleep: press <span class="key">▼ Bottom</span>.</td></tr>
<tr><td>Screen Orientation</td><td><strong>Normal (landscape)</strong> — default, USB port on the right. <strong>Flipped (180°)</strong> — rotates the display 180°. Button mappings are automatically swapped when flipped. Change takes effect immediately — no restart required. Available on both T-Display ESP32 and T-Display-S3.</td></tr>
<tr><td>DS3231 RTC Module</td><td>External hardware clock. When enabled, the device keeps accurate time without WiFi. Required for TOTP in AP and Offline modes. Configure I2C pins (default SDA=21, SCL=22) and press <strong>Sync & Save</strong> to set time from browser clock.</td></tr>
</tbody>
</table>
</div>
<div class="callout callout-info">
<strong>Screen & Lock Settings</strong>
Screen timeout and Auto Lock are configured together in one block with a single <strong>Save Settings</strong> button. Both can be set independently — either or both can be set to Never. If Auto Lock is set shorter than or equal to screen timeout, the value is automatically adjusted upward in the UI.
</div>
<div class="table-wrap">
<table>
<thead><tr><th>Screen Timeout</th><th>Auto Lock</th><th>Behaviour</th></tr></thead>
<tbody>
<tr><td>30 seconds</td><td>5 minutes</td><td>Screen off after 30 s → deep sleep after 5 min of no activity</td></tr>
<tr><td>Never</td><td>5 minutes</td><td>Screen stays on → deep sleep after 5 min of no button press</td></tr>
<tr><td>30 seconds</td><td>Never</td><td>Screen off after 30 s → stays in pseudo-sleep indefinitely, wake on button</td></tr>
<tr><td>Never</td><td>Never</td><td>Screen always on, no automatic sleep or lock</td></tr>
</tbody>
</table>
</div>
</div>
<!-- PIN -->
<div class="section" id="pin">
<div class="section-header">
<span class="section-num">11</span>
<h2>PIN Settings</h2>
</div>
<h3>Device PIN (Startup Encryption)</h3>
<p>Controls the PIN requested on every boot. This PIN encrypts the master device key — all stored data depends on it. Enabled by default, created on first boot.</p>
<div class="table-wrap">
<table>
<thead><tr><th>State</th><th>Effect</th></tr></thead>
<tbody>
<tr><td>Enabled</td><td>PIN required on startup. Master key encrypted on disk.</td></tr>
<tr><td>Disabled</td><td>No PIN on startup. Master key stored unencrypted — if the device is stolen, data can be extracted.</td></tr>
</tbody>
</table>
</div>
<div class="callout callout-danger">
<strong>Important</strong>
Once disabled, the master key cannot be re-encrypted without a Factory Reset. A reset requires re-importing all keys and passwords from backups.
</div>
<h3>BLE Hardware Confirmation PIN</h3>
<p>An additional PIN prompted on the device itself before any BLE password transfer. Prevents unauthorized transfers if someone else has access to the device.</p>
<h3>Duress PIN</h3>
<p>A separate emergency PIN that triggers an immediate, silent wipe of all device data when entered during startup instead of the normal PIN.</p>
<div class="table-wrap">
<table>
<thead><tr><th>Property</th><th>Detail</th></tr></thead>
<tbody>
<tr><td>Length</td><td>Must match the Startup PIN length (4–10 digits). Configured automatically.</td></tr>
<tr><td>Value</td><td>Must differ from your normal Startup PIN.</td></tr>
<tr><td>Behaviour</td><td>Device displays <strong>PIN OK</strong> — indistinguishable from normal unlock — then silently erases all data and restarts.</td></tr>
<tr><td>Storage</td><td>Stored as a separate PBKDF2-HMAC-SHA256 hash. Never stored in plaintext.</td></tr>
<tr><td>Board support</td><td>Both T-Display ESP32 and T-Display-S3.</td></tr>
<tr><td>Prerequisite</td><td><strong>Startup PIN must be enabled.</strong> Duress PIN can only be triggered from the startup PIN lock screen. If the startup PIN is disabled, the Duress PIN section is greyed out, and any previously configured Duress PIN is removed automatically.</td></tr>
</tbody>
</table>
</div>
<h4>What is erased</h4>
<p>When the Duress PIN is entered, the following is permanently destroyed before restart:</p>
<ul>
<li>All TOTP / HOTP keys</li>
<li>All passwords</li>
<li>Device master key (<code>/device.key</code>)</li>
<li>WiFi credentials</li>
<li>BLE bonding data (NVS partition)</li>
<li>All sessions, web admin credentials, PIN configuration</li>
<li>The Duress PIN hash itself</li>
<li>The entire filesystem partition (~3.9 MB) — erased at the hardware level
via <code>esp_partition_erase_range</code>, making file recovery impossible
even with direct flash access</li>
</ul>
<h4>How to enable</h4>
<p>In the web cabinet, open the <strong>Pin</strong> tab and scroll to the <em>Duress PIN</em> section. Toggle the switch on, enter and confirm the PIN, then click <strong>Save Duress PIN</strong>. To disable, toggle the switch off — the hash file is removed from the device.</p>
<div class="callout callout-danger">
<strong>⚠ Warning — irreversible</strong><br>
There is no confirmation prompt. Entry of the Duress PIN immediately and permanently destroys all data. Use only in situations where device compromise is imminent and you must prevent data extraction.
</div>
</div>
<div class="section" id="hidden-space">
<div class="section-header">
<h2>Hidden Space</h2>
</div>
<p>Hidden Space is a second independent encrypted vault. At boot, entering an alternate PIN loads a completely separate set of keys, passwords, and web cabinet account. The device behaves identically from the outside regardless of which space is active.</p>
<h3>How it works</h3>
<p>The device key file holds two independent encrypted slots. Each slot is protected by its own PIN and salt. The slot that successfully decrypts determines which space loads — the other slot is never touched during that session.</p>
<div class="callout callout-info">
Hidden Space requires startup PIN to be active. The startup PIN cannot be disabled while Hidden Space exists — remove Hidden Space first (which requires entering Space B's own PIN on-device), then disable the startup PIN.
</div>
<h3>Step 1 — Enable Hidden Space</h3>
<p>Open the web cabinet from Space A → <strong>Settings → Hidden Space</strong> → enable the toggle → confirm. The device restarts.</p>
<h3>Step 2 — Set a Space B PIN</h3>