[alex_young]

I think “just” is doing a lot of work here.

  Steps I remember:
  1. Put down everything so you have 2 free hands. 
  2. Mention that it will take a minute to the cashier.  
  3. Unlock your phone.
  4. Find the Amazon app (this part is odd, you’re at Whole Foods).
  5. Dig around in the UI for the store code.  They move it around. 
  6. Present your phone to the cashier to scan.

[crazygringo]

1. 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.

[llsf]

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.

[thinkling]

The WF store I frequent has lousy cell reception, so add th step “open Settings app and get on store’s wifi” (and who knows what all that lets them track).

[clhodapp]

IMO the word "just" is probably the most loaded words in technical argument