Computer Science for IGCSE & O level - Hardware (Section 7 - No. 1)
What is the purpose of the three large squares on the corners of a QR code?
To indicate the QR code's size.
To correct errors in the code.
To assist the camera to correctly read the QR code.
To store extra data.
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The large squares in the corner are used to assist the camera in reading the code correctly.