That’s looking quite promising. The main thing missing before being ready for me is filter/add by region and of course shop name. Then it can go out i think (+ give me a random code feature as the next step).

And make a new post with this, no one will notice otherwise (if you haven’t already)

This is the same thing as in chrome

https://pointerpointer.com

When you sing up for such a card, do they usually check it? I can image some stores checking your ID the first time.

Yeah, but that you have to do that manually and share it among more people to be really secure. But yes, could be also an option.