I think everyone here who's pointing out that this is equivalent to a link shortener is missing something: the majority of QR codes in existence right now... are encodings of link-shortener URLs.
There's a big difference between QR codes ("Quick Response") - which I agree are mostly encodings of links and shortened links - and Data Matrix encodings of generic data. Both look like black and white squares, and can often be read by smartphones.
Either way, you make a valid point!
(As an aside, I don't know how many QR codes are out there, but for one of my products we're intending to print 10^8 data matrix codes this year, of which there'll be perhaps 1000 batches, i.e. only 1000 different codes.)
Either way, you make a valid point!
(As an aside, I don't know how many QR codes are out there, but for one of my products we're intending to print 10^8 data matrix codes this year, of which there'll be perhaps 1000 batches, i.e. only 1000 different codes.)