Electronic Article Sureveillance EAS

Electronic Article Sureveillance EAS

Electronic Article Sureveillance EAS
Some RF tags contain no information. They are not RFID because they are detected as simply there or not there - call it 'one bit' of information. These are usually employed as anti-theft devices in shops and libraries, and are called Electronic Article Surveillance (EAS). New forms of RFID perform EAS functions as well, obviating the need for a separate device, and adding more value to the tag. All the main three EAS technologies have been developed into RFID versions, albeit at higher costs. An EAS tag costs about 2 to 6 cents because it does not need a silicon chip. The RFID developments of these are also called "chipless".
 
6 billion EAS tags were sold in 2003. The main suppliers are Checkpoint Meto and Tyco Sensormatic.