RFID Patents

Patents about RFID. Usage against customers already written down.

PATENT#6659344
Automated monitoring of activity of shoppers in a market
http://www.freepatentsonline.com/6659344.html

PATENT#7225980
Shopping cart with RFID capability
http://www.freepatentsonline.com/7225980.html

PATENT#20020165758
Identification and tracking of persons using RFID-tagged items
http://www.freepatentsonline.com/20020165758.html

http://www.youtube.com/watch?v=FVmD4iTXRLE