Passkeys are supposed to be unphishable and unstealable, but that safety depends on whether yours are synced to the cloud or bound to a single device. Here's what actually happens when the device is gone.

Passkeys are supposed to replace passwords entirely, but a credential created on an iPhone often can't be used on an Android phone. Here's the design decision behind it.

Google, Apple and your bank keep asking you to make one. A passkey is a login that never sends its secret across the wire, which is why it beats the password at the thing passwords fail at most: phishing.