I'd Scan That!
/As QR codes have become more common, they've begun to fade in the eyes of consumers. Getting people to pull out their phones and scan over to the advertiser's website is taking a bit more work, but with a 30% tolerance in readability some designers have taken license to play. I recently came across this fun compilation on Mashable of some of the most creative designs out there, with more at BitRebels.
Update: Click on through for some fun concept re-designs of those ubiquitous UPC bar codes.