I'm really not knowledgeable about these new passkey systems.<p>If I switch to this sort of system, does that mean that I won't be able to check email using the library computers any more? I am required to use the same hardware each time, and that hardware must have its own internet access, correct?<p>Or is there a USB-based solution I can plug into the library computer to authorize my login? But I won't be able to download anything on the library computer....<p>My contingency planning for "house catches on fire and I have to leave in my underwear" or "on holiday and someone steals my stuff" currently depends on being able to log in to my account via someone else's device to send email or to chat.<p>In a future passkey system, if someone grabs your phone when you are visiting Amsterdam, throws it into a canal, and runs away, what do you do to recover? How do you log in to your email to get a copy of the ticket to print out using a hotel computer?<p>Because I can totally see griefers doing that. Your (used) phone might have a material cost of $400, while the economic impact it has on you is far higher.