Using a Phone as a Security Key?

Gon co has the challenge, the cryptographic challenge, response, protocl change sense. The way data goes back and forth between im, am, we can stiltla,. i'm hapy to talk arout the details of that if you want. But it is still sea tap too. And so it's all the same atatlevle. I'm superinterested in the details of the transport. Tha, the big question in my head is, when can i get rid of all my keys and just use my phone for all this stuff? Like im a relatively security sensitive user, but the keys are silly.