"Passkeys, on the other hand, can’t be stolen or forgotten. They’re strings of letters and numbers that are unique to your account, stored on your device or in a safe cloud environment. You don’t need to memorize them — they’ll automatically unlock your accounts when you go to log in."<p>What prevents passkeys from being stolen or copied?<p>Can you export or backup your passkeys? Can you arbitrarily expire a passkey and re-key where it was being used?<p>If you cannot, then they are not <i>your</i> passkeys--they belong to Apple, Google, Microsoft, etc. and they have locked you into their ecosystem.<p>If you don't control your passkeys, what stops those who control "your" passkeys from using them without your permission?