Interesting. So kinda like a smash bank, basically. I would like an option to cancel a card in case it was stolen. (My wallet was stolen before and so I had to do the same with my debit card)
Also can't kids just use their school ID's then? Or maybe you could set up some process where you guys can take a picture personally (while taking a school ID I guess, or having some document that he would have to sign, or a parent)
Snip -nevermind they can just use a photo. :3
I guess you could have cards that are for free-users, and have a membership that gives more features for the 'dedicated' ones.
EDIT: I guess you already thought about that later on. Sorry, still reading. xD