Passkey is some sort of specific unique key to a device allowing to use a pin on a device instead of the password. But which won’t work on another device.
Now I don’t know if that key can be stolen or not, or if it’s really more secure or not, as people have really unsecure pins.
Most hardware today has what’s called a TPM. It’s a physical hardware chip that can store certificates in a way that can’t be extracted.
It’s way more secure than someone stealing a cer file.
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