First invented for use in industrial applications in Japan in the early 1990s, QR codes were being widely used by consumers when smartphones with QR readers became more prevalent in the 2000s. After ...
Veritasium on MSN
A Hand-Built QR Code Shouldn’t Work but Somehow It Does
A manually constructed QR code offers a rare look into how digital information is stored using simple patterns. By assembling each module one square at a time, the process reveals the hidden logic ...
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