[ALittleLight]

Walmart+ app allows you to scan items with your phone as you pick them up. Then, when you reach the self-checkout, you just scan a QR code and you are "checked out". I wish you didn't need to do the self-checkout thing, and could just finalize the transaction entirely from your phone, but other than that it is pretty good.

[judge2020]

When this was piloted years ago at Sam’s Club (subsidiary of Walmart Inc) it was possible, but only because their door team was able to scan it before you walked out.