Paper checks aren't nearly so common for anything other than maybe a local tradesman or if you're renting from an individual. It's not uncommon to see high traffic places like gas stations refuse paper checks outright, or only accept them from local banks, as the onus is on the receiver if it doesn't clear.

NFC payments have been around for a bit but are only recently very widespread, COVID really pushed that forward.

The only notable big name holdout is Walmart. Somehow, they're still on either chip+pin or magnetic stripe cards only.

We literally started rolling out chip-and-pin after tap-and-go was already rolled out in England (and presumably elsewhere). It made no fucking sense because it was obviously going to be replaced again, and chip-and-pin is a miserable experience. All it did was annoy everybody for several years.

I mean the physical credit cards didn’t have tap to pay most of the time until very recently. NFC has been around for a long time.

Thankfully no signatures involved. You roll up, swipe/dip/tap your card in a reader on the gas pump, enter your postal code (archaic security measure from the pre-chip card era), wait a few moments for the electronic authorization (they pre-authorize an amount in the $75-150 range), then pump, and leave.

If you are paying cash, you generally have to go inside before pumping and prepay, and then go back inside afterwards to get your change, if applicable.

That used to be typical in the US as well. I think that when pay-at-the-pump became the norm (using a card), prepayment became expected even when paying with cash inside, at around the same time. I expect there are some gas stations here and there in the US that still operate the way you describe though.

An increasing number of gas stations are completely unattended though — the attached store might close overnight but the pumps are still usable.

I only did it once in America and this was some years ago so maybe it's changed... but basically you have to somehow pay in advance. How do you do that without knowing how much petrol you'll need? Very good question! If I recall I basically overpaid and they refunded me or something like that. Crazy.