Board Thread:Micronations/@comment-15776551-20140924022044/@comment-4251620-20140925184530

Still, creating a smart card / magnetic card with appropriate software, which will connect to a central database, would be much cheaper and easier. It might be hard to prevent technically capable people from editing their own wallets, or attempting to and damaging their account.

I will say that me and a few other Czech micronationalists have designed and created a banking system, both with an e-bank and an equivalent of a credit card (and a payment terminal application to go with it) and it works pretty well. As it is centralised, it is both simple and a normal user can not edit his own balance. Now we are ironing out the last issues, I can send you the link to the e-bank (I have translated it into English, and there's a possibility of micronational languages - so far we have one there, and Russian) and the terminal application itself, with instructions how to make the credit card.