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Near Field Communication in detail

Aleksandrs Cudars

April 07, 2013

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  1. Near field communication, or NFC, is a standards- based type

    of wireless communication that transmits a radio field at a very close range, usually within about an inch.
  2. An NFC exchange always involves a device that initiates the

    communication, and a target from which the device is receiving information. The target can be a powered “peer,” like two mobile phones exchanging information, or an unpowered “tag” or object, such as a credit and debit card, key card, sticker, poster or key fob.
  3. A Simple Way to Share NFC offers an easy way

    for mobile devices to communicate wirelessly with both powered devices and unpowered objects.
  4. Your Wireless Life NFC is just one more way for

    you to interact with your wireless world—from the train station to the shopping mall to your very own home, NFC streamlines repetitive common tasks and lets you get information from other NFC-enabled devices and tags.
  5. Active and Passive Modes When a powered NFC device connects

    to another powered NFC device, they are connecting in active communication mode. In active mode, both devices generate a radio field as they communicate.
  6. How does NFC work? The technology is simple. It's a

    short-range, low power wireless link evolved from radio-frequency identification (RFID) tech that can transfer small amounts of data between two devices held a few centimeters from each other.
  7. How does NFC work? Unlike Bluetooth, no pairing code is

    needed, and because it's very low power, no battery in the device being read.
  8. A More Technical View NFC standards cover communications protocols and

    data exchange formats, and are based on existing radio-frequency identification (RFID) standards including ISO/IEC 14443 and FeliCa. The standards include ISO/IEC 18092 and those defined by the NFC Forum
  9. Specs NFC is a set of short- range wireless technologies,

    typically requiring a distance of 10 cm or less. NFC operates at 13.56 MHz on ISO/IEC 18000-3 air interface and at rates ranging from 106 kbit/s to 424 kbit/s.
  10. NFC Tags NFC tags contain data and are typically read-only,

    but may be rewriteable. The tags can securely store personal data such as debit and credit card information, loyalty program data, PINs and networking contacts, among other information.
  11. NFC vs Bluetooth Aspect NFC Bluetooth Bluetooth Low Energy RFID

    compatible ISO 18000-3 active active Standardisation body ISO/IEC Bluetooth SIG Bluetooth SIG Network Standard ISO 13157 etc. IEEE 802.15.1 IEEE 802.15.1 Network Type Point-to-point WPAN WPAN Cryptography not with RFID available available Range < 0.2 m ~100 m (class 1) ~50 m Frequency 13.56 MHz 2.4–2.5 GHz 2.4–2.5 GHz Bit rate 424 kbit/s 2.1 Mbit/s ~1.0 Mbit/s Set-up time < 0.1 s < 6 s < 0.006 s Power consumption < 15mA (read) varies with class < 15 mA (transmit or receive)
  12. Many Standards = Inconsistency NFC standards cover communications protocols and

    data exchange formats, and are based on existing radio-frequency identification (RFID) standards including ISO/IEC 14443 and FeliCa. The standards include ISO/IEC 18092 and those defined by the NFC Forum
  13. Many Standards = Inconsistency • ISO/IEC 18092 / ECMA-340 •

    ISO/IEC 21481 / ECMA-352 • GSMA • StoLPaN • NFC Forum • Etc.
  14. Are there any alternatives to NFC? Yes – and there

    are plenty within it, too. One debate in the mobile and finance industry is between the 'mobile wallet' as represented by NFC, or the 'digital wallet'. Calling NFC 'a technology, not a strategy,' PayPal's Kerry Wong, MD for Hong Kong, Korea and Taiwan, promotes the latter.
  15. Social networking NFC can be used in social networking situations,

    such as sharing contacts, photos, videos or files, and entering multiplayer mobile games.
  16. Are there any alternatives to NFC? NFC is only one

    technology, with Bluetooth and RFID just as able to strike-up a conversation between two gadgets, but there are distinctions within NFC, too. In comes in both passive and active flavours, including P2P mode (exchanging information, such as business cards or contacts) and SecureElement NFC (where a machine recognises a NFC phone as a bankcard).
  17. Identity and access tokens • The NFC Forum promotes the

    potential for NFC- enabled devices to act as electronic identity documents and keycards. As NFC has a short range and supports encryption, it may be more suitable than earlier, less private RFID systems.
  18. Google Wallet Google Wallet allows consumers to store credit card

    and store loyalty card information in a virtual wallet and then use an NFC-enabled device at terminals that also accept MasterCard PayPass transactions.
  19. References • http://en.wikipedia.org/wiki/Near_field_communication • http://www.techradar.com/news/phone-and-communications/what-is-nfc-and-why-is-it-in-your-phone-948410 • http://www.samsung.com/us/article/near-field-communication-a-simple-exchange-of-information • http://www.pocketpc.ch/c/attachments/107454d1348473672-nfc.jpg/ •

    http://www.developer.nokia.com/Blogs/Code/files/2012/10/Lumia920_NfcInteractor_ReceiveCustomUri.png • http://www.c99.org/2012/07/07/now-that-i-have-a-galaxy-nexus-i-can-finally-play-with-this-nfc-tag-sticker-i-got/ • http://www.faqs.org/patents/imgfull/20100299527_07 • http://www.columan.com/wp-content/uploads/2013/02/visa-nfc-samsung.jpg • http://www.bit4id.com/es/images/stories/prodotti/smart_reader/slide_minilectorair_nfc.png • http://img.docstoccdn.com/thumb/orig/121639275.png • http://patentimages.storage.googleapis.com/EP2541794A3/imgaf001.png • http://cdn.shopify.com/s/files/1/0112/5592/products/facebook-like-8x5-nfc-smart-sticker-1_1024x1024.jpg?16 • http://img.gawkerassets.com/img/17pl0yjg61kudjpg/original.jpg • http://img.gadgetian.com/Samsung-Galaxy-Nexus-Google-Wallet-Apk.jpg