RFID labels
While standard bar codes require line-of-sight "reading," RFID (radio frequency identification) does not. Indeed, as prices for RFID tags have come down, the technology has been adopted in many key application areas – particularly in the retail environment, for item-level stock management as well as security. RFID has proved a highly-flexible technology, regularly partnered with self-adhesive labels, and it continues to develop new functionalities.
RFID "smart labels" – consisting of a chip and antenna – are usually applied to a pack or product contained within the self-adhesive label laminate, which offers the option of additional print on the label face. Both passive (generally read-only), or active tags (tag data can be modified or rewritten, and can be transmitted over a longer distance), can be accommodated in self-adhesive labels, for reading either with a handheld device or via a computer portal. Tags may be overt – visible on the package – or covert, according to requirements.
Edit by Vikas
24 April, 2012