Switch cash

When we buy something, the merchant only receives cash or can only pay by mobile phone. This concept App is designed to solve this problem. You can use this App to scan cash directly, and then cash can be converted into electronic money into your mobile phone. Then the cash turns grey and unavailable. On the other hand, if you scan the gray cash with App, the electronic money in your mobile phone will be converted into cash, and then the cash will become the normal color. In this way, cash and electronic money can be converted to each other.