What this tool does
TechDad Authenticator is a standalone local TOTP/HOTP authenticator. Your authenticator secrets are stored in the encrypted vault on this computer and codes are generated locally.
StandaloneRuns in its own app-style window rather than as a browser extension.
Offline-firstNo developer server is needed to generate your OTP codes.
Self-containedPersistent files remain under the TechDadAuthenticator folder.
EncryptedYour vault is protected by your master password.
Quick directions
Unlock your vaultEnter your master password when the app starts.
Add an accountUse + for manual entry or ▣ Scan QR for QR-based setup.
Use the account filterSelect All Accounts or a specific account to show only what you need.
Copy a codeUse Copy on the account row. TOTP codes refresh automatically.
Lock or ExitLock hides the vault without shutting down. Exit closes the local app server.
QR scanning
Choose the capture method that best fits where the QR code is displayed.
Select AreaChoose a QR visible anywhere on the desktop.
Full ScreenSearch a complete screen capture.
Open ImageScan a saved PNG/JPG/WebP image.
Paste ImageScan an image already copied to the clipboard.
QR images are decoded locally and temporary capture files are removed after processing.
Privacy & security
Authenticator secrets and codes remain on this computer unless you deliberately export or copy them.
Encrypted vaultThe vault is protected using your master password.
Local storagePersistent files stay beneath the TechDadAuthenticator folder.
Encrypted transferEncrypted export/import is available under Settings.
Backup verificationSettings can verify that the newest backup can actually be decrypted and parsed.
About TheTechDad1027
TheTechDad1027Practical tools, projects and technology for real life.
Visit the main TheTechDad1027 website for projects and practical technology, or use Buy Me a Coffee if you would like to support future development.
License & acknowledgements
TechDad Authenticator uses standard TOTP/HOTP algorithms. QR decoding includes the MIT-licensed jsQR library extracted from the MIT-licensed Authenticator Extension package supplied for this project.
See THIRD-PARTY-LICENSES.txt in the app folder for third-party licensing details.