Starbucks Allows Customers to Pay with Their Mobile Devices

Multiple Choice

Starbucks allows customers to pay with their mobile devices. Customers create an account with Starbucks as part of the retailer's loyalty program, and transfer money to a pre-paid account. Upon check out, users activate the Starbucks app, which creates a _____________ that can be scanned at check out.

A) Seven digit numerical code
B) Bar code or QR code
C) Credit voucher
D) Password