From Smart Mobs.
In the Kanto region, Japanese convenience store chain Sunkus are attaching 2D barcodes on Bento takeout meal packages.
If a consumer scans a 2D barcode with his camphone, it asks him marketing survey questions about a Bento. He may then be rewarded with a coupon.
Other sales items like rice products, bread, desserts may soon bear similar 2D barcodes to collect more data about consumers.
The start of Permission Marketing.
Via RFID in Japan.