I was at a self-checkout recently that required a store rewards membership to checkout at. I tried 867-5309 but form validation required both a phone number and a last name.

I guess retailers are catching on.

I know it's not exactly a last name, but... did you try the "standard" name for that number? I can't imagine nobody else thought of signing up like that, so unless the store explicitly blacklisted certain numbers, I'd think it worth a shot.

Can you not just make a fake account? That David Smithee sure does buy a lot of stuff all over the UK :D .

"Forgot card" often works too!

That's good to know. Another trick I used to use was just to tell the cashier that I forgot my card, and she'd grab a spare and swipe it. Then they started doing phone numbers, so that probably doesn't work as well now.

$local_area_code-867-5309 is almost always registered. No reason to sign up for your own card.

Jenny, is that you?

How do NFC payments relate to it?