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submitted 2 days ago by libewa@feddit.org to c/privacy@lemmy.ml

A rebuttal to an anti-passkey, pro-TOTP post that has made the rounds on Lemmy as well.

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[-] Ferk@lemmy.ml 3 points 2 days ago* (last edited 2 days ago)

There are actually 3 categories (though the idea of 2FA is picking 2 out of 3):

  • Something you know (passwords, PINs, security questions...)
  • Something you have (hardware keys, TOTP, smartcards, SMS/push-notification...)
  • Something you are (fingerprints, facial recognition, iris scans...)

But passkeys collapse 2 of those into one by having the passkey algorithm include (as a step of the key derivation) a passcode or some biometric data.. that's why most passkey systems require some form of verification. Though it's up to your authenticator which method is used.

this post was submitted on 14 Oct 2026
126 points (74.8% liked)

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