QR codes don't even have to take you anywhere. The code can contain email addresses, phone numbers, phone numbers + SMS message text, calendar information, plai

QR codes don't even have to take you anywhere. The code can contain email addresses, phone numbers, phone numbers + SMS message text, calendar information, plain text, vCard data, etc. QRs containing URLs are the most common in my experience, but you'd probably need a HTML5 badge system* to convey what the QR code contained if you didn't want to spell it out right next to the code. * http://clubajax.org/wp-content/uploads/2011/01/HTML5Icons1.png http://clubajax.org/wp-content/uploads/2011/01/HTML5Icons1.p...