RFID is a method of remotely storing and receiving data using devices called RFID tags. RFID tags can be small adhesive stickers containing antennas that receive and respond to transmissions from RFID transmitters. RFID tags are used to identify and track everything from food, dogs, beer kegs to library books.

RFID tags use a standard that has already been hacked by several researchers. RFID Security discusses the motives for someone wanting to hack an RFID system and shows how to protect systems.

Coverage includes: security breaches for monetary gain (hacking a shops RFID system would allow a hacker to lower the pricing on any product products). How to protect the supply chain (malicous/mischievous hackers can delete/alter/modify all identifying information for an entire shipment of products). How to protect personal privacy (privacy advocates fear that RFID tags embedded in products, which continue to transmit information after leaving a store, will be used to track consumer habits).

The purpose of an RFID system is to enable data to be transmitted by a portable device, called a tag, which is read by an RFID reader and processed according to the needs of a particular application. The data transmitted by the tag may provide identification or location information, or specifics about the product tagged, such as price, colour, date of purchase, etc. .