You can access your wallet in two ways:

🔥 QR Code Scanning (Recommended): Click "Scan Passcode" to use your camera and scan your encrypted QR backup. The system shows a red-bordered preview for 1 second when successfully detected, then automatically processes your wallet data.

⌨️ Manual Entry: Click "Alternative Access" to manually enter your mnemonic words using individual input boxes (12-24 words), with optional passphrase and timestamp. You can paste full mnemonics for auto-fill or type each word individually with show/hide controls.

Dexcont uses multiple security timers for maximum protection:

🔒 10-Second Main Timer: All seed parameters (mnemonic, passphrase) are permanently cleared from memory after 10 seconds of wallet access.

🔒 30-Second QR Timer: QR validation displays automatically clear mnemonics after 30 seconds with user notification.

🔒 Immediate Canvas Clearing: All camera captures and QR previews are instantly wiped after use.

🔒 Seed-Only Storage: Only wallet addresses are kept in memory - sensitive seed data exists only during generation and user viewing.

📝 Individual Word Boxes: Select word count (12-24) and enter each word in numbered boxes. Words automatically hide after typing for security.

👁️ Show/Hide Controls: Each word has its own toggle button to reveal/hide individually.

📋 Smart Paste Auto-Fill: Paste a full mnemonic in any box - the system automatically detects word count (12/15/18/21/24), adjusts the interface, and fills all boxes with immediate security hiding.

📱 Responsive Design: 3 words per row on desktop, single column on mobile, with scrollable interface that never exceeds browser height.

🔴 Visual Confirmation: When your QR code is successfully detected, a red-bordered preview appears inside the camera frame for exactly 1 second with a pulse animation.

🎯 Perfect Sizing: The preview is sized at 75% to ensure it stays within camera boundaries on all devices.

🧹 Automatic Clearing: The preview canvas is immediately cleared after display for security, leaving no cached images in your browser.

⚡ Seamless Flow: After the 1-second preview, processing automatically continues to wallet validation.

Addresses are generated using industry-standard cryptographic methods:

🌱 Seed Generation: Your mnemonic + optional passphrase + optional timestamp create a master seed using PBKDF2-HMAC-SHA512.

🔑 Key Derivation: Private keys are derived using BIP32/BIP44 hierarchical deterministic paths for each supported cryptocurrency.

💰 Multi-Currency: Supports DEX, Bitcoin, Litecoin, Ethereum, TRON (both mainnet and testnet versions).

⚡ Instant Generation: All addresses for all currencies are generated simultaneously for immediate access.

⚠️ Critical Warning: If you lose your mnemonic, you cannot recover your wallet. There is no "forgot password" option in decentralized systems.

💾 Backup Best Practices:
• Store multiple physical copies in secure locations
• Use metal backup plates for fire/water resistance
• Never store digitally (photos, cloud, email)
• Test recovery before sending large amounts

🔒 QR Backups: Create encrypted QR backups using Universal Passcode creation for convenient yet secure storage.

🛡️ Perfect External Security: Dexcont has ZERO external attack surface because:

🔒 100% Client-Side: Everything runs locally in your browser - no servers, no network transmission of sensitive data.

🔒 No External APIs: No third-party services access your data.

🔒 Air-Gap Compatible: Works completely offline, including Tails OS and isolated systems.

🔒 Self-Contained: Pure HTML/JavaScript with no external dependencies for core functionality.

⚠️ User Environment: The only vulnerabilities come from compromised user devices (malware, keyloggers, etc.) - which is the user's responsibility to secure.

✅ Full Unicode Support: Dexcont supports mnemonic generation and input in many languages including English, Japanese, Chinese, French, Spanish, and more.

🌍 Global Compatibility: Input methods work with all character sets and scripts.

🔄 Normalization: All text inputs are properly normalized (NFKD) to ensure consistent processing regardless of input method.

✅ Extended Wordlist Support: Dexcont supports wordlists up to 25,000+ words, far beyond the standard BIP39 2048-word limit.

📚 Backward Compatible: Fully supports standard BIP39 wordlists while allowing enhanced entropy through larger dictionaries.

🔒 Enhanced Security: Larger wordlists provide increased entropy and resistance to dictionary attacks.

✅ Full BIP39 Compliance: Complete implementation with PBKDF2-HMAC-SHA512 using 2048 iterations and 64-byte key generation.

🔧 Technical Specs:
• Standard mnemonic word lengths: 12, 15, 18, 21, 24 words
• Checksum validation for all word combinations
• Passphrase support (BIP39 extension)
• Compatible with all major hardware wallets

✅ Full ECIES Compatibility: Completely compatible with ECIES (Elliptic Curve Integrated Encryption Scheme) used in Geth and other Ethereum clients.

🔧 Ethereum Integration: Seamless compatibility with Ethereum ecosystem tools and wallets.

🔄 Cross-Platform: Your keys work across different Ethereum clients and tools.

✅ Enhanced Passphrase Protection: BIP38-style passphrase-based encryption is built into the QR protection layer and wallet generation.

🔒 Dual Protection: Both mnemonic-level passphrases (BIP39) and QR-level encryption passphrases for maximum security.

⚡ Seamless Integration: Transparent to users while providing enterprise-grade protection.

✅ Military-Grade QR Encryption: QR codes use secure double-XOR encryption with SHA3-256 key derivation from your passphrase.

🔐 Encryption Process:
• Your passphrase generates a SHA3-256 hash
• Mnemonic data is encrypted using double-XOR method
• Even if QR is compromised, data is useless without passphrase

🛡️ Quantum-Resistant: SHA3-256 provides strong protection against future quantum computing threats.

✅ Complete Offline Operation: Dexcont is built to be fully client-side, HTML-only, and works perfectly in air-gapped systems.

💿 Tails OS Compatible: Runs flawlessly on Tails (The Amnesic Incognito Live System) for maximum security.

🔌 Zero Network Dependency: No internet connection required for any wallet operations after initial page load.

💾 Portable: Save the HTML file locally and run from any device without installation.

✅ True Ephemeral Architecture: Seeds exist in memory only during active use, then are securely wiped using multiple methods:

🗑️ Multi-Layer Clearing:
• Immediate variable nullification
• Canvas memory clearing with dimension reset
• Forced garbage collection when available
• Timer-based automatic disposal

⏱️ Time Limits: Sensitive data automatically expires: 10s for main wallet, 30s for QR validation, 1s for previews.

🌐 Universal Browser Support: Works on all modern browsers including Chrome, Firefox, Safari, Edge, and mobile browsers.

📱 Mobile Optimized:
• Responsive design adapts to all screen sizes
• Touch-friendly interface elements
• Mobile camera integration for QR scanning
• Compact layouts prevent overflow on small screens

🔧 Technical Requirements: Only requires JavaScript and camera access (for QR scanning) - no plugins or installations needed.

📷 Camera Permission: Ensure your browser has camera access permission. Click "Allow" when prompted.

🔍 QR Code Quality:
• Ensure QR code is clearly visible and well-lit
• Clean camera lens if image appears blurry
• Hold device steady for better focus
• Try adjusting distance from QR code

🔄 Alternative Options: If camera scanning fails, use "Alternative Access" to manually enter your mnemonic words.

🛠️ Browser Issues: Try refreshing the page or using a different browser if problems persist.