Will we ever run out of them?
In: Mathematics
QR codes can be massive or tiny. They also directly encode the data. The QR code with the largest amount of data in it has almost 2 kilobytes in it. The way it encodes text, that is 4296 characters (letters, numbers, and punctuation). In fact, this whole comment could be encoded as a QR code with room to spare, since there are only 355 characters in it.
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