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Does this actually work? I thought most TOTP codes were single use. Have you actually tried re-using them?
by gleenn 2y ago
Does this actually work? I thought most TOTP codes were single use. Have you actually tried re-using them?
- Rychard 2y agoThe initial QR code isn't a TOTP code, it contains the secret used to generate the TOTP codes.
- userbinator 2y agoThe QR code contains the TOTP key, which is the seed that's used to generate the codes, which form a time-based pseudorandom sequence.
- smitelli 2y agoYou can absolutely scan the QR code with multiple authenticator apps (or copy paste the seed value into them) and they will all produce the same codes in the same order going forward.