I applied to YC to bring this idea to the US (rejected). Credit cards are our primary form of digital money and their fees are excessive.<p>The basic design was ACH money into the wallet, transfer money between balances for ultra low cost (1%), ACH money out of the wallet.<p>The difficulties are regulation. Doing this would make you a money service business and banks really don't want to touch that. Plus it costs a nice chunk of change to register in every state.<p>If card processing companies are taking around 3% + 30 cents of each transaction, they've effectively devalued our money by that much. I think you could skip all the NFC terminal nonsense and just do QR code based payments with the camera. Make low fee transactions a reality. Then you could pay for individual news articles online, support forums monthly (no way to pay a fraction of a cent for a page view), or tip your favorite streamer. It would be beautiful. It could also set us free from the ad based tracking economy.<p>Maybe one of the big players will implement it (Google, Apple, Walmart), or at least figure out the business model for someone to copy. I think it could really change the US economy.