HOW TO: Use QR Codes for Event Marketing
Nearly every year since 1994 has been hyped as the year that QR codes pierce the mainstream, but in 2011 the hubbub is finally reaching a fever pitch.
This is thanks to a confluence of factors: Critical mass in smartphone penetration, a large installed base of many barcode-scanning apps, and an approaching social tipping point of awareness. QR codes are finally becoming an effective tool for driving offline-to-online interactions at scale.
Mashable|Full story here.