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Near Field Communication or NFC, is a short-range high frequency wireless communication technology which enables the exchange of data between devices over about a 10 centimeter (around 4 inches) distance. NFC is primarily aimed at usage in mobile phones.
NFC communicates via magnetic field induction, where two loop antennas are located within each other's near field, effectively forming an air-core transformer. It operates within the globally available and unlicensed radio frequency ISM band of 13.56 MHz, with a bandwidth of 14 kHz. Supported data rates are 106, 212, 424 or 848 kbit/s and working distance is upto 20cm.
NFC vs Bluetooth:
NFC and Bluetooth are both short-range communication technologies integrated into mobile devices. NFC operates at a maximum data rate of 848Kbps where as Bluetooth at a rate of 2.1Mbps. With less than 20 cm, NFC has a shorter range, which provides a limitation of threat. That mostly makes NFC suitable for crowded areas when correlating a signal with its transmitting physical device. NFC requires comparably low power. NFC can operate even when one of the devices ran out of battery (by consuming the active device's battery).
Applications of NFC: Plenty of applications are possible, such as:
Other applications in the future could include:
NFC communicates via magnetic field induction, where two loop antennas are located within each other's near field, effectively forming an air-core transformer. It operates within the globally available and unlicensed radio frequency ISM band of 13.56 MHz, with a bandwidth of 14 kHz. Supported data rates are 106, 212, 424 or 848 kbit/s and working distance is upto 20cm.
NFC vs Bluetooth:
NFC and Bluetooth are both short-range communication technologies integrated into mobile devices. NFC operates at a maximum data rate of 848Kbps where as Bluetooth at a rate of 2.1Mbps. With less than 20 cm, NFC has a shorter range, which provides a limitation of threat. That mostly makes NFC suitable for crowded areas when correlating a signal with its transmitting physical device. NFC requires comparably low power. NFC can operate even when one of the devices ran out of battery (by consuming the active device's battery).
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| An NFC mobile phone interacting with a "smart poster" |
- Mobile ticketing in public transport: an extension of the existing contactless infrastructure.Such as Mobile Phone Boarding Pass.
- Mobile payment: the device acts as a debit/credit payment card.
- Smart poster: the mobile phone is used to read RFID tags on outdoor billboards.
- Bluetooth pairing: in the future pairing of Bluetooth 2.1 devices with NFC support will be as easy as bringing them close together and accepting the pairing. The process of activating Bluetooth on both sides, searching, waiting, pairing and authorization will be replaced by a simple "touch" of the mobile phones.
Other applications in the future could include:
- Electronic ticketing: airline tickets, concert/event tickets, and others
- Electronic money
- Travel cards
- Identity documents
- Mobile commerce
- Electronic keys: car keys, house/office keys, hotel room keys, etc.
- NFC can be used to configure and initiate other wireless network connections such as Bluetooth, Wi-Fi or Ultra-wideband.
source: wikipedia.org
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