WIC (was) insanely specific when I worked grocery 20 years ago. I mean down to oz in the paper things, and the machine would get grumpy if the cereals were off that even by a little. And everything had to be scanned, then scan in the papers and hope it worked. Loved the ladies who made that the entire section with each paper on top of its respective foods. Easier.

Snap, even back then, was just a card and convered almost everything (no hot, no prepared, no alcohol, no smokes)