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ByteVault is the companion mobile app that enables ByteAuth passwordless authentication. It securely stores your cryptographic keys and signs authentication challenges.

Scan a QR code, confirm with biometrics, and you’re logged in. No passwords to remember, type, or reset.

ByteVault includes a full-featured Bitcoin wallet with Lightning Network support. Send and receive Bitcoin, make instant payments, and manage your funds.

Your cryptographic keys are generated on your device and never leave it. You own your identity — not us, not the apps you use.

Every authentication requires Face ID, Touch ID, or your device passcode. Your keys are protected by your device’s secure enclave.

Use ByteVault with unlimited services. Each integration gets a unique key pair for maximum privacy.

  1. Download ByteVault from your app store
  2. Open the app and tap “Create New Wallet”
  3. Secure your backup phrase (12 words) — write it down and store safely
  4. Enable biometric authentication when prompted
  1. Navigate to a login page with a ByteAuth QR code
  2. Open ByteVault and tap the scan button
  3. Point your camera at the QR code
  4. Review the domain name shown
  5. Confirm with Face ID, Touch ID, or passcode
  6. Done — you’re authenticated!
  • Keep your backup phrase written on paper in a secure location
  • Enable biometric authentication
  • Keep your device’s operating system updated
  • Verify the domain name before authenticating
  • Never share your backup phrase with anyone
  • Never enter your backup phrase on a website
  • Never screenshot your backup phrase
  • Never authenticate to domains you don’t recognize
  • Ensure your camera has permission to access ByteVault
  • Make sure the QR code is well-lit and in focus
  • Try moving closer or further from the screen
  • Ensure the QR code hasn’t expired (refreshes every 30 seconds)
  • Check your internet connection
  • Ensure you’re scanning a valid ByteAuth QR code
  • The challenge may have expired — wait for the QR to refresh
  • Contact the website’s support if issues persist

If you have your backup phrase:

  1. Download ByteVault on your new device
  2. Select “Restore from Backup”
  3. Enter your 12-word backup phrase
  4. All your identities will be restored

Need help with ByteVault?