[tempnow987]

I've tried to use an a key on a device, but they DON'T seem to work everywhere. If I use an apple phone for my key, how does that work with Chrome on Windows or just for Windows logins?

If I'm using whatever windows is pushing (maybe INSIDE windows - so if they get my pin/password I'm hosed?) how does that work on my iphone or for Apple TV login?

The whole thing is a freaking mess. U2F or whatever came before was so easy by comparison. Seemed to work very well cross platform. If you had a NFC version you could bring it close to your phone and touch a button and voila - authenticated. Or plug into a computer and touch a button. And it seemed to work with Chrome / Windows etc etc.