A few days ago, I misplaced my wallet. I remember having it on Sunday, the night of my friend’s birthday dinner, because I was the one to put my card down. Maybe I had it on Monday. I didn’t spend any money then aside from a Lyft ride home, which famously doesn’t require you to swipe a card, so there’s no way to know for sure. And even when I did spend money — a case of La Croix at the bodega, an iced latte as a reward for going to the laundromat — my wallet never factored into the equation. I use Apple Pay for almost every purchase, both because it’s easy and convenient and because, unlike my wallet, my phone is something I actually can...