I learned a lot of neat stuff about this process and other things around it as a side benefit of some of the tasks I was given at a job.

It was fun to learn, and to see how they solved some of the problems that would come up that you might not think about.

Of course the side effect is you also learn just how insecure older CC tech was. I think almost everyone sort of notice that at this point, but once you start learning the details… it’s bad. Basically electronically writing down CC numbers like they might have in the ‘60s, assuming people are good and trustworthy.