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Near Field Communication (NFC)
Post: #1

Near Filed Communication (NFC) is a close range radio communication protocol used for very sensitive applications. It was jointly developed by Sony and Philips. The standard specifies ways to establish P2P(Peer-to-Peer) communication links for data exchange. After the P2P network has been configured, another wireless communication technology, such as Bluetooth or Wi-Fi, can be used for longer range communication or for transfering larger amounts of data. Its development was parallel to RFID (Radio Frequency Identification), but both differ in many ways. NFC offers a very short range as compared to RFID. This is an added advantage in the sense that it requires very little transmission power and cheap transmitters can be used for the purpose. Hence it is very suitable for Smartcard like applications. It can also work in both active and passive modes. NFC works on a frequency range of 13.56 MHz. It offers a baud rate of 106 kbps to 424kbps. The transmission is made from a frequency of 13.56MHz inductively, hence it uses high magnetic field. At a transaction only two participants can be involved - one transmitter (initiator) and one receiver (target). The transmission can be either in active fashion or passive fashion. Both have their own merits and demerits. The NFC transmission runs helping duplex, i.e. that one of the two devices can send only in each case or receive at a time.
Post: #2
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Post: #3
Near Field Communication (NFC) is based on a short-range wireless connectivity, designed for intuitive, simple and safe interaction between electronic devices. It is a easy to use wireless communication interface for last few centimeters. It is easy to use target selection by simply holding two devices close to each other.
In our daily life NFC will be the contact-less interface that allows people to do intentional interaction with their smart and connected environment in the most convenient way.
NFC stands for Near Field Communication. It is a wireless communication technology based upon 13.56 MHz RF-ID. It is designed for read/write transactions with a very short range operating distances up to a few centimeters.
Near-field communications (NFC) combines two established technologies: radio frequency identification (RFID) tags, which are tiny chips with built-in radios and wireless reader that picks up the signals from the radios. The reader when activated emits a short range radio.signal that powers up a microchip on the tag, and allows for reading a small amount of data that can be stored on the tag
Active mode:
In active mode both initiator and target are using their own generated RF field to enable the communication.
 It is intuitive (“touch and start”)
 It is suitable for payment/financial applications
 It interacts also with battery-less smart devices
 It is low cost
 Standardized in ISO/IEC 18092 NFCIP-1 (NFC Interface and Protocol - 1)
 Based on RF-ID technology at 13,56 MHz
 Operating distance typical 10 cm
 Data rate today up to 424 kbps (up to 1 Mbps planned)
NFC applications can be split into the following four basic categories:
 Touch and Go: Applications such as access control or transport/event ticketing, where the user needs only to bring the device storing the ticket or access code close to the reader. Also, for simple data capture applications, such as picking up an Internet URL from a smart label on a poster.
 Touch and Confirm: Applications such as mobile payment where the user has to confirm the interaction by entering a password or just accepting the transaction.
 Touch and Connect: Linking two NFC-enabled devices to enable peer to peer transfer of data such as downloading music, exchanging images or synchronizing address books.
 Touch and Explore: NFC devices may offer more than one possible function. The consumer will be able to explore a device's capabilities to find out which functionalities and services are offered.
 Low cost, NFC has very fast and easy configuration and pairing.Instant connection capability.
 “Out of the box”
 - No special software
 - No manual configuration and settings
 - No search and pair procedure
 Intuitive
 - User initiates the process
 - Simple data acquisition just by touching
 High level of flexibility and adaptability
 - Read data from any electrical device (interface dependent)
 - Read data from passive RFID tag
 In the near future NFC will be the frontrunner technology for data capture, data transfer and access control applications. NFC technology continues to evolve and develop new applications. It is going to bring revolution in mobile communications. Consultants will continue to pitch the blue-sky potential of the technology .There will be a significant spike in NFC activities in future.
Post: #4
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Post: #5
to get information about the topic Near field communication full report ,ppt and related topic refer the link bellow

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