Every time I open my phone, I live in two worlds. In one, I tap an icon, and I’m in. Email, photos, banking, work. The phone remembers who I am. The companies remember who I am. If I lose the phone, I get a new one, log in, and everything’s there. The friction is invisible because it is somebody else’s. In the other world, I have to remember things. A seed phrase I wrote on paper three years ago. A password I picked when I was sleepy. A wallet I bridged from a chain I no longer use. Sovereign...