Will we ever run out of them?
In: Mathematics
QR codes are more a family of formats: there’s different sizes, and essentially, they’re just ways of storing bits of information. Their storage capacity for data depends on this size, and the format of the data (understandably, numeric takes up a lot less space/pixels than ASCII, for example).
One of the common QR formats used for larger bits of information are 57×57 (version 10), which can encode 174 characters, though on the higher side (version 40), QR codes can encode 4,296 alphanumeric or 7,089 number digits per code.
Basically you’re not numbering them, you might literally just be writing a number, web address, or something of the sort into QR code format. And the possibilities within that space is just all possible values for that specific version’s size/format.
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