Ahh, yes! I am a plastic carrier as well. I have not returned to a semi-local camera store because they were cash only. Good point! I wonder whatever happened to those carbon copy sliding machines they used when credit cards first came in vogue?
They still exist. A few months ago, Harbor Freight's headquarters were evacuated because of the wildfires in CA, and they couldn't process credit cards nationally as a result. This was high brewery build out time, and I used to make several purchases there every weekend. They pulled one out.
It's a huge security risk, though. I used my American Express (the easiest card company to deal with in fraud situations, imo) so I didn't worry much, but it is uncomfortable to have your credit card number actually printed out and held in a file these days.
I used to use them in college too...I worked for a non-profit museum that still relied on dial-up internet for card transactions back in the mid-to-late aughts, and our system used to crash a couple of times a week.