NFC (Near Field Communication) is an extension of RFID (Radio Frequency Identification) but with a purposefully decreased range. Why would you want LESS range? Mostly for security. You see, it’s common to think that RFID tags need to be right next to a reader before they register. In lots of cases this is true, but you can “shoot” a radio signal at an RFID tag or purchase a long range scanner to read it if from a distance. Since NFC is limited to a maximum of around 4 inches, it’s much more difficult for anyone to get your information without you knowing. This makes it a great technology to use for touch-less payment, door entry, or anywhere else that security is a consideration.
Antenna design document
MiFare Card format
Copyright © Powered by Volusion.