I'm new at this place so correct my topic if I posted it wrong.
You these cryptocards has become very popular and I want to make a such feature. But I don't know how to make them.
There should be generated a unique card for every user which he can print out and use when he logging in.
I could easily generate a card like that, but how to check if it right?
Simply just put it into a database or what would you do?
- need some ideas here.