prisoners dont have internet access and not most of them have computers so the walets of the prisoners will be stored on the Prison computers and every prisoner will receive his own wallet, where they will be able to make purchases

It works already basically like that, prisoners dont have money there money is stored on accounts for them or they can buy in some prisons kind of debit cards which they can use in vending machines, down the road we will also offer to prisoner rfid chips where they can just pay directly from their hand.

This however will cause complications because 1 prisoner can just cut out the rfid chip of another prisoner and so rob him, right now we not really sure on how to implement rfid chips but this will not be a big issue.