Physics, 31.08.2021 15:20 itzyougirllona47

The digital payment system that enables sellers to accept payment at trade shows, food trucks, concerts, or farm stalls is called a:
A. biometric authentication system.
O B. QR code.
O c. payment protection device.
D. mobile point-of-sale device.
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The digital payment system that enables sellers to accept payment at trade shows, food trucks, con...