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If you don't have your phone, you can't log in. SMS 2FA has the same problem. You technically should be able to migrate from one provider to another, it remain

• judge2020 4y ago
  > You technically should be able to migrate from one provider to another, it remains to be seen how easy Apple and Google will make the process. On a UX level, the transfer to another syncing security key "provider" is going to be interesting, if they even do that at all - I kind of doubt they'll have a "transfer your iCloud passkeys to your Chrome password manager" and they'll instead say "go to each service and enroll a new security key via your new syncing key manager". On a technical level, I wholly imagine there'll be a tool that pulls iCloud Passkeys[0] via the MacOS Keychain application and then inserts them into your new key manager. 0: https://developer.apple.com/documentation/authenticationservices/public-private_key_authentication/supporting_passkeys https://developer.apple.com/documentation/authenticationserv...