Read a QR Code by Hand, Without a Phone—It Takes 10 to 120 Minutes

Noel Friedrich created a printable worksheet and tutorial for decoding QR codes by hand. Readers copy the black-and-white modules, undo the masking pattern, and convert the data into hexadecimal digits and then text. The guide covers QR versions 1–5 in byte mode, with an estimated decoding time of 10–120 minutes.