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How NFC works ?

– Card emulation mode
In card emulation mode, the “NFC Device” behaves like a contactless smart card. It is functioning as a target in a passive mode (cf. definitions in §1.2.2).
While a contactless card is powered by the magnetic field generated by the interrogator, an “NFC Device” may require more energy to operate. Indeed, an NFC application on a mobile phone, a tablet or a consumer device may benefit from other features than just NFC (screen, applications, security, internal communications, etc.). Access to these features requires an internal power source, a battery or power supply. 

 
– Reader mode
The “NFC Device” in reader mode behaves like a simple contactless card reader. It initiates communication by generating a magnetic field and then sending a command to the target. The target responds to the interrogator by retro-reflecting the incident wave as described in the definitions in §1.2.2).
The specificity of NFC operating modes is that the target can be not only a tag or a contactless card, but also an “NFC Device" that behaves like a contactless card (in card emulation mode).
Usages of reader mode are principally information reading, when “NFC Devices” is used to read data by waving it in front of electronic labels available on streets, bus stops, sightseeing monuments, ad banners, parcels, products or on business cards (vCard). 

– Peer-to-Peer mode
This mode allows two “NFC Devices” with the same NFC performance to exchange the data with each other alternately. Each of these devices supports both interrogator and target communication modes, sending or receiving by turns the data.
Communication in peer-to-peer mode is slower than in conventional reader / card emulation mode, because of the management of a heavier protocol, which is necessary for the repartition of roles between the two “NFC Devices.”
As of use cases:
This mode can be used to initiate gateways (pairing) with other technologies for data transfer at higher than NFC (Bluetooth, Wi-Fi or Wi-Fi Direct) data rates.

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How NFC works ?

CNRFID members and partners

RFID Users

AIR FRANCEAIRBUS HELICOPTERSAirbus GroupBNF BIBLIOTHÈQUE NATIONALE DE FRANCECHRISTIAN LOUBOUTIN SASCarrefourDGAC/STACDirection Générale de l'Armement (DGA)EMMANUEL MAURINENEDISENGIEESP developpementHENNESSYMEDINORMEMENUISERIE BERARDMichelinNEYRET RUBANSONETRENAULTSAGEM DEFENSE SECURITETERRADONATHALES ALENIA SPACE FRANCETURBOMECA Société AnonymeUNDIZUTC Actuation FranceZimmer France

RFID Suppliers

MU-ElectronicsWisekey SemiconductorsBALLUFF FRANCEAGIDCIPAMAROMA THERAPEUTICSNET 7Groupe PRISMEFfly4uALIZENTALLFLEXZEBRA TECHNOLOGIES 360 SmartConnect by FINAOS4GV SAAROMA THERAPEUTICSSICKPRIMO1D SAORANGE BUSINESS SERVICESEM MICROELECTRONIC - Marin SAGENES'INKELIOT Innovative SolutionsWIDCheckpoint Systems FranceINEO-SENSEUrbanwaveParametric Technology S.A.Neopost ShippingINTERFACE TECHNOLOGIE INFORMATIQUEATHESIMURATA ELECTRONIQUE FRANCESCHREINER ProtechPRISMADDRETAIL RELOADERIC LEWDEN CONSULTANTAROMA THERAPEUTICSMICRO BEFREQUENTIELSTIDTOPPAN Europe GmbHInotec Barcode SecuritySMLSIMUTECH-UAETECTUS Transponder Technology GmbHST MICROELECTRONICSEDITAGWirepasISLOGAXEM TechnologyHID GLOBAL SANEXXTEP TECHNOLOGIESAIRBUS DEFENSE AND SPACEUbisenseDevCSIBlulog Sp. z o.o.NEXXTEP TECHNOLOGIESEMDEVELOPFCT PARTNERSPARAGON ID (Paragon Identification)Facom THINK AND GO NFCPAGE UPNEXESS SARFID LABSDipole RFIDSTARCHIPDCNSNEDAP FRANCESTORKCOMRF ConceptionINTEGRA SolutionJIDELECINTELLINGAvnetHMY GroupBIOLOG-IDETIK OUESTTAG&PLAY - IMPRESSIONS MODERNESSATO FranceInfos franceKATHREIN FRANCEIERE Business VentureAMDP sasEMBISPHEREIOTGOUROUELA INNOVATIONNanoP2CODING FranceUBI Solutions SASBG IngénierieNOGEMA TECHNOLOGYMEYKO

Academics

CNRS DELEGATION PROVENCE ET CORSEESIEE PARISETSIINRIAINSTITUT POLYTECHNIQUE DE GRENOBLEISENSATT NORDUNIVERSITE AIX MARSEILLE

Other partners

EESTELFILRFIDGS1 FranceHOSPITALIAMEWS PARTNERSPOLE DES INDUSTRIES DU COMMERCERAINRFID BRETAGNESATT NORD

Created by the French Government, the French National RFID Center encourages the deployment of RFID - Radio Frequency IDentification. RFID is an automatic identification technology offering potential applications in all sectors (retail, health, aeronautic industry, leisure, transportation ...). Active RFID tags and passive RFID tags appears in different form factors: RFID tags, RFID badges, RFID cards ... These RFID tags are generally associated with RFID readers connected to the information system. Commonly used RFID frequencies are: RFID LF (125 and 134.2 kHz), RFID HF (13.56 MHz) and RFID UHF (860-960 MHz). For HF RFID, the physical principles and applications are identical to those used for NFC (Near Field Communication) or contactless smart cards. Associated with sensors network, these RFID technologies are the basis for future applications of the Internet of Things (IoT). The CNRFID supports the RFID suppliers, RFID users, institutions and research organizations according to their needs by promoting the use of ISO or EPC standards. It brings together over 120 national and international stakeholders involved in the development of RFID projects.