Technical Jargon of NFC

 NFC-based communication between two devices is possible when one device acts as a reader/writer and the other as a tag.

• The tag is a thin simple device containing antenna and small amount of memory. It is a passive device, powered by magnetic field. Depending on the tag type the memory can be read only, re-writable, and writable once.

• The reader is an active device, which generates radio signals to communicate with the tags. The reader powers the passive device in case of passive mode of communication

     Source : www.touchwork.com

What is NFC ?

     NFC, short for Near Field Communication, is a short range wireless RFID technology that makes use of interacting electromagnetic radio fields instead of the typical direct radio transmissions used by technologies such as Bluetooth. It is meant for applications where a physical touch, or close to it, is required in order to maintain security. NFC is planned for use in mobile phones for, among other things, payment, in conjunction with an electronic wallet, and for setting up connections between Bluetooth devices (rendering the current manual Bluetooth pairing process obsolete).
  
     Source : www.mobileburn.com