[toasterlovin]

You typically authorize payment with a card before pumping, then the final amount is captured by the gas station after you're done. You only have to guess the amount if you're paying cash or if the pump card reader is broken and you have to pay inside.

It's the same concept as paying for a meal at a sit down restaurant: they authorize your card for the check amount plus some extra, then you write in the tip on the receipt, then the restaurant captures the correct amount later (at least, that's historically how it works, many restaurants are shifting to payment terminals where it's all done at once).

[lmm]

> It's the same concept as paying for a meal at a sit down restaurant: they authorize your card for the check amount plus some extra, then you write in the tip on the receipt, then the restaurant captures the correct amount later (at least, that's historically how it works, many restaurants are shifting to payment terminals where it's all done at once).

You what? That's bizzare.