In reply to BeaveVillage.

Actually, a contactless EMV/NFC card transaction—under $100, requiring no PIN—is much faster than paying with and receiving change for cash, and the added benefit for the merchant is they don't have to take loads of cash to the bank every night (or the following morning), and that money is already in their account first thing next morning; and that's why many also offer "cash out" as well; with any luck they may soon be able to finish the day with the same float that they started with, and very little physical banking required ...