I mean, I said “coin” but really I didn’t even mean “coin” as in “currency” but “coin-shaped piece of plastic that I have for this purpose”. The system has been in use here for decades now and I’d imagine that people using currency for carts are the exception. We all have the plastic substitute coins on our keychains. Was there a lot of pushback against the “coin operated” carts in Canada that nobody bothered with distributing replacement chips?