[adorno]

The QR code system has enough codes to give everyone in the world their own unique code/ID. Everywhere you do, all you need to do is get your code scanned, and VOILA! ‘everybody knows your name’.

[SaveFerris]

[The QR code system has enough codes to give everyone in the world their own unique code/ID.]

Yes, exactly. Could it be used with a PIN / fingerprint etc. to validate a purchase? I say it's possible.