we’re in the computer age that being said the cash register could be programed to kick out items when the card is used or swipe the card first and the item won’t ring up.
It does exactly that, as you say. You can buy a whole bunch of stuff in the store, run it up on one ticket and when you run the card, the register will only take payment for the items that qualify under the food stamp program and for nothing else. Then there will be a balance left which must be paid for with cash.
It’s already all automated and no matter what the clerk says or does - the register just won’t take any food stamp money for non-food stamp items - no matter what someone says or tries.
You can’t argue with a computer terminal that does that ... LOL ...