[LeifCarrotson]

Every time I check out at Kroger (or similar membership-based store) I tell the cashier that I don't want a membership but I do want the listed sale price. They always just scan their own card.

[rietta]

Most of the time Jenny's phone number works xxx-867-5309. https://en.wikipedia.org/wiki/867-5309/Jenny. Someone already registered it.

[ohazi]

Digits of pi usually work too

[jasonjayr]

CVS started to refuse to scan the 'house' card as of about a year ago. and they try to collect your phone number when they hand you a card for the first time.

[sysadmindotfail]

Every time the item has a digital coupon advertised price I simply inform the cashier I don't a phone with me. They discount it immediately.

[mandelbrotwurst]

I've had this work occasionally but often the opposite experience unfortunately.