I remember paper gift certificates, sometimes were really formal had to sign etc.
When I managed an independently owned pizza-pasta restaurant, I'd write something on a person's receipt. They'd pay in advance for Uncle Joe & Aunt Sally's meal, for example, and I'd write "Happy Anniversary" or whatever "From Frank @ Tony's" and sign my name at the bottom.
The ONLY thing we relied on is that the people who worked there could recognize my handwriting. Crazy, right? We logged that type of sale, too, but they were just a little side-note in a ledger book. And all the daily sales totals were done by hand every night. The registers weren't computerized, you had to sit there and do the math and count the money and they had to match up.
Jeez, I remember the first register we got that actually spit out the daily-totals. We still did the math for like a whole year because we didn't trust the thing. It spit out sales totals for the day, the week, the month, and year. I even remember which keys you had to hit for all that. But it wasn't yet a full-on computer, it was basically just a calculator with memory storage, I guess.
That itself was a wonder. When we learned the thing could also calculate each employee's daily and weekly wages, it was
frighteningly wondrous. I'd compare it to the feeling you get today when you fear AI will take over the most important yet most stressful part of your job....totally awesome but ominously uncomfortable at the same time.
Gosh, I remember, too, that, once you hit that key for the register to spit-out totals for a day or a week or month, you couldn't do it again. I think it was like, after 24 hours, you couldn't go back and get that day's total; after 7 days, you couldn't go back and get that week's total, etc....like, you couldn't ask the register to recall a certain time that passed.
I'm not saying it right, but you probly get it.