Blockchain billing system for EV charging -- 2

Job ID: 31012520

Budget: $1,500 – $3,000 SGD

Below is the workflow for my mini-project:
1.Once the Electric car reaches the charging station, we need to scan the QR code in the mobile (need design a APP)
2.Hence the mobile app makes the request for the amount of charge that require.
3.This request goes to the block chain network and there will be an initial authentication and verification.
4.Charge will dispense immediately upto a certain limit (like visa paywave) and upon confirmation the remaining charge will be dispense accordingly.
5.The requested amount will be deducted from the user's wallet
The crypto currency that we using is ether in ethereum block chain network