**A phone as a password** Passkeys are a password replacement standard that Google and Apple both bought in on. They are basically use your phone as your password using PGP Public/Private Key encryption. The server only ever stores your public key, your private key is in your device. You effectively login using whatever method unlocks your phone. **** # More ## Source [Passwordless login with passkeys  |  Authentication  |  Google Developers](https://developers.google.com/identity/passkeys) ## Related - [[Public Key Encryption]]