{{RE: Suntan: It used to be that the most annoying thing to deal with while waiting in a checkout queue was to see the old lady two spots up take out her f'n check book. Now that is equalled by seeing the young hipster pull out their phone to pay. Takes just as long once you add in cashier confusion.}}
Actually, it's quick. ;-) ;-)
I am no young hipster, but I use Samsung Pay everywhere.
Only one time in about 100 or more uses has it not worked -I stopped at a Target store, and the register kept saying invalid card. Since I am not often in that store, it's ok. Every single other place I have shopped --from Whole Food to Macy's to US Post Office to Trader Joes and dozens of other stores all have worked quickly and smoothly. Even Starbucks and Pete's Coffee.
The places I normally shop, they don't care anymore -they just check and bag. In less frequented stores I have had a "we don't take apple pay" comment which is more common than you would expect. Some store clerks simply say "that doesn't work here" and wait as I let it work quickly and effectively. I hold the phone at the card reader groove and it works.
It may seem a long time to an impatient patron behind me, but to me it is just as fast. Especially since I have my phone ready -screen pin entered less one digit (S6 Active) and when the "you can swipe your card" moment arrives it works quickly and efficiently --virtually every time.
Oh, once when I was in line the SamPay app did not come up! (It's on both the start screen and on the lock screen, as a "pull-uo" card. Once, when I had a dozen or so apps open, it was sluggish coming up. I got the credit card picture but not the pin button. That time, I just put my phone back in my pocket and when my check out time arrived I used the card.
Oh, No one has ever asked to see an ID or anything else when I have used it.