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Pay With Cash
Aubrey wanted to buy an earring with a credit card. The checkout clerk asked for a fingerprint. The earring was less than $100.
Call me old-fashioned, but I heavily favor cash over credit cards. I only use credit cards for purchases that are (1) online or (2) very large. I do get funny glances sometimes when I pull $50 bills out of my wallet — in fact, it happened just this afternoon — but at least nobody's asked me for a fingerprint!
(No, I don't use ATMs either, which tend to dispense only $20s — I physically go to the bank, chat with the cashier, and leave with a month's wad of cash.)