@CiaraNi Just an aside: I've stopped patronizing most businesses that will only take card payments. There's a lovely little gelato place that opened up in my town, and they have a big sign up that says NO CASH. It's their choice, of course, not to accept legal tender -- and it's my choice not to go there any more.
@Soozcat Good idea. No-cash businesses and self-service check-outs - if we all avoid them, we'd send a collective signal.