Question: What do you need before your camera phone can scan QR codes? A . permission from the creator of the QR code B . scanner

What do you need before your camera phone can scan QR codes?
A. permission from the creator of the QR code
B. scanner to plug into a headphone jack
C. QR creation app
D.QR reader app
E. QR detection device
What do you need before your camera phone can scan QR

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