alt Hacker News1. I've already put down the groceries I was carrying, so the cashier can scan them. I have free hands.
2. The cashier is busy scanning, you don't need to mention anything.
3. FaceID unlocks it automatically.
4. What Amazon app? I use the Whole Foods app. I keep it easily accessible, I don't need to find it.
5. The code is always displayed by default when you open the app. You never have to dig around anything.
6. Or scan it yourself under the customer-facing scanner they have for that.
I get it, but you realize that the OP just waved one hand and was done (with paying, getting his discounts and points, etc.).
When we have to reach for the phone, unlock it (with biometric), tap to open the Whole Foods app, and then present the phone to scan a QR code.
While it might be not much more, it is more than just show one hand.