1. User may have bag in his hand.
2. User can’t always carry cash.
3. Pay option must be one click away.
Screen 1 - User can pay with his e-wallet. Center Docked FAB with QR code scanner will leads the user to QR code scanner page.
Screen 2 - QR Code scanner scans the code and identifies it as Starbucks India.
Screen 3 - User enter the amount he/she has to pay and press ‘Pay Now’ button.
P.S - Scan QR code with Center Docked FAB, enter amount and it’s done !
I tried to apply “Jakob’s Law” in this Problem.
Users spend most of their time on other sites. This means that users prefer your site to work the same way as all the other sites they already know.