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Backup & Recovery Code Generator
Generate secure one-time backup and recovery codes for two-factor login, without look-alike characters.
Tip from Tink: Store only hashes of the codes on your server.
Letters that look alike (0/O, 1/I/L) are left out. Store the codes' hashes on your server, and let each code be used only once.
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How to use the Backup & Recovery Code Generator
- Pick how many codes and how long.
- Copy the list.
- Give them to users to keep safe.
Everything runs in your browser. Nothing you enter is uploaded.