Electronic check readers to take advantage of the Check 21 rules. I'm not sure how many places still have them but they were a fixture of large store checkouts 20-ish years ago when the rules came out. IIRC Walmart (and probably other stores but I have vague memories of Walmart...) even had a printer they could put a standard check into that printed the front information (date, dollar amount in words and digits, memo) for you.