I was curious about this a while ago but there are a bunch of features including error correction for damaged or partial codes. If I remember correctly, it was created for automated manufacturing so it makes sense to have redundancies to minimize delays and downtime.
I see an outline of a QR code in there. How well would that work if someone could just vandalize a single pixel within the code and break it?
QR code error correction
I was curious about this a while ago but there are a bunch of features including error correction for damaged or partial codes. If I remember correctly, it was created for automated manufacturing so it makes sense to have redundancies to minimize delays and downtime.