NFC Near Field Communications

Outline Essential specifications Comparison Uses and applications

Essential specifications

Comparison

Uses and applications

Essential specifications Works by magnetic field induction Unlicensed RF band of 13.56 MHz ASK RF Collision Avoidance ； RFCA （ Time Slot ） Manchester Distance : 0-20 cm Speed : 106 kbps ， 212 kbps ， 424 kbps ↑ There are two modes: Active Communication Mode Passive Communication Mode

Works by magnetic field induction

Unlicensed RF band of 13.56 MHz

ASK

RF Collision Avoidance ； RFCA （ Time Slot ）

Manchester

Distance : 0-20 cm

Speed : 106 kbps ， 212 kbps ， 424 kbps ↑

There are two modes:

Active Communication Mode

Passive Communication Mode

Active Communication Mode

Passive Communication Mode

Comparison NFC (Near Field Communications ) RFID (Radio Frequency Identification ) BT (Blue Tooth)

NFC (Near Field Communications )

RFID (Radio Frequency Identification )

BT (Blue Tooth)

RFID (Radio Frequency Identification ) RF band : 135KHz↓ 13.56MHz 433.92MHz 860M~930MHz(UHF) 2.45GHz and 5.8GHz Distance: 10cm ~ 50m↑ Speed : 26~106 Kbps Gen1:140 Kbps Gen2:640 Kbps

RF band :

135KHz↓

13.56MHz

433.92MHz

860M~930MHz(UHF)

2.45GHz and 5.8GHz

Distance: 10cm ~ 50m↑

Speed :

26~106 Kbps

Gen1:140 Kbps

Gen2:640 Kbps

BT (Blue Tooth) The Globally Available Band : 2.4GHz Distance : 10m (up to 100m) Speed : 1Mbps ↑

The Globally Available Band : 2.4GHz

Distance : 10m (up to 100m)

Speed : 1Mbps ↑

Set-up time : NFC < RFID < BT Distance : NFC < RFID < BT BR : RFID ≒ NFC < BT Applications : BT ≒ RFID < NFC Costs : RFID < NFC < BT Security : BT < RFID ≒ NFC

Set-up time : NFC < RFID < BT

Distance : NFC < RFID < BT

BR : RFID ≒ NFC < BT

Applications : BT ≒ RFID < NFC

Costs : RFID < NFC < BT

Security : BT < RFID ≒ NFC

Uses There are three main use cases for NFC: card mode : the NFC device behaves like an existing contactless card reader mode : the NFC device is active and read a passive RFID tag P2P mode : two NFC devices are communicating together and exchanging information.

There are three main use cases for NFC:

card mode : the NFC device behaves like an existing contactless card

reader mode : the NFC device is active and read a passive RFID tag

P2P mode : two NFC devices are communicating together and exchanging information.

applications Mobile electronic tickets Smart poster Bluetooth pairing Electronic money Identity documents Electronic keys

Mobile electronic tickets

Smart poster

Bluetooth pairing

Electronic money

Identity documents

Electronic keys

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