A method of reading a card using radio frequency energy to transmit information from the card to a reader See Proximity
The process of using an electrical transponder which stores information that can be used to identify the item to which the transponder is attached, similar to the way in which a bar code on a label stores information that can be used to identify the item to which the label is attached
The use of small radio transponders which are activated by a reading transmitter The transponder can carry a unique ID code or other information in its memory, and can be read at a distance without line of sight