Introduction NFC is a short-range wireless technology. NFC provides unique advantages over other available wireless technologies. The design includes a near-field transmitter and receiver to send data from one computer to another
Continued… NFC is one of the latest wireless communication technologies Enables the exchange of data between devices over a distance of up to 20 centimetres. NFC offers safe yet simple and intuitive communication between electronic devices.
History 2004 Nokia, Philips And Sony Establish The Near Field Communication (NFC). Nokia 6131 is the first NFC phone. By 2013, one in five phones will have NFC.
How it works? NFC is based on RFID technology that uses magnetic field induction to enable communication between electronic devices in close proximity. NFC operates at 13.56 MHz. For two devices to communicate using NFC, one device must have an NFC reader/writer and one must have an NFC tag.
Applications: Social net-working: File Sharing, Electronic business card, Electronic money. E-Commerce :Mobile payment, Ticketing, Tour guiding,Boarding pass. Identity documents: NFCs short range helps keep encrypted identity documents private. NFC device can connect with Bluetooth and Wi-Fi.
Benefits & Features Not restricted to 1-to-1 communication Multiple devices in a small area can communicate with each other using the same frequency. Maximum transfer bit rate of 800kbps. No special software is required. Operation at a frequency of 13.5 MHz No ethical concerns due to range.
Advantages of NFC: Emerging NFC standards allow customers to quickly purchase products and transfer secure information by touching devices. NFC allows companies to reduce staffing, printing, and point of sale costs. Google Wallet is an Android app that stores virtual versions of your credit cards for use at checkout when a PIN is used.
Disadvantages of NFC Communication range is the main limitation of NFC compared to Bluetooth. NFC does not suit portable devices that require online connectivity to another portable device or to a fixed access point. The placement of the antenna is more critical. The location of the antenna has to be indicated to the user.
Overcoming disadvantages These disadvantages can be partly overcome by combining NFC with Bluetooth or WLAN, which on the other hand will mean that some of the advantages such as the lower price of pure NFC implementation are lost. Still, this is an important aspect in NFC application possibilities.
Comparison with Bluetooth NFC and Bluetooth are both short-range communication technologies which are integrated into mobile phones. NFC sets up faster speed than standard Bluetooth. The maximum data transfer rate of NFC (424 kbit/s) is slower than that of Bluetooth V2.1 (2.1 Mbit/s).
Continued… NFC has a range of less than 0.2m while bluetooth has a range of ~10m. NFC requires comparatively low power, similar to the Bluetooth V4.0 low energy protocol.
Continued… The data transfer achieved by Bluetooth is no doubt faster than that of NFC technology, but it provides the benefit of better security and increased usability. Pure NFC communication enables lower price,since NFC is technically less complex than bluetooth.
Conclusion We conclude that NFC is a highpotential technology for implementing ultralow power sensors with touchbased communication with mobile handsets. NFC is backed by the leading mobile phone manufacturers and is expected to penetrate into mobile phones in near future. This will improve the availability of NFC technology in general and facilitate its applicability in mobile sensor applications, too.