About NFC

nfc  near field communication nfc-forum.de  rfid frequency standardization short range distance  data rate secure element secure domain domains speed distance touch based interaction power supply active passive communication mode load modulation device connection setup half duplex multicast initiator target gerneral flow protocol card emulation mode reader writer emulation data exchange manchester coding modiefied miller coding ask amplitude shift keying 13,56 MHz peer to peer p2p set-up time