Modifications

== NFC (Near Field Communication) ==

== NFC (Near Field Communication) ==

{{bloc-etroit|text=NFC (Near Field Communication)

{{bloc-etroit|text=NFC (Near Field Communication)

NFC (Near Field Communication) is a set of short-range (typically up to 10cm) wireless communication technologies designed to offer light-weight and secure communication between two devices. While NFC was invented by NXP (Phillips at the time), Nokia and Sony, the main body behind the NFC 'standard' today is the [http://www.nfc-forum.org/home/|NFC Forum], who are responsible for publishing and maintaining a variety of standards relating to NFC technology.

NFC (Near Field Communication) is a set of short-range (typically up to 10cm) wireless communication technologies designed to offer light-weight and secure communication between two devices. While NFC was invented by NXP (Phillips at the time), Nokia and Sony, the main body behind the NFC 'standard' today is the [http://www.nfc-forum.org/home/ NFC Forum], who are responsible for publishing and maintaining a variety of standards relating to NFC technology.

NFC operates at 13.56MHz, and is based around an "initiator" and "target" model where the initiator generates a small magnetic field that powers the target, meaning that the target does not require a power source. This means of communication is referred to as '''Passive Communication''', and is used to read and write to small, inexpensive 13.56MHz RFID tags based on standards like ISO14443A. '''Active communication''' (peer-to-peer) is also possible when both devices are powered, where each device alternately creates its own magentic field, with the secondary device as a target and vice versa in continuous rotation.}}

NFC operates at 13.56MHz, and is based around an "initiator" and "target" model where the initiator generates a small magnetic field that powers the target, meaning that the target does not require a power source. This means of communication is referred to as '''Passive Communication''', and is used to read and write to small, inexpensive 13.56MHz RFID tags based on standards like ISO14443A. '''Active communication''' (peer-to-peer) is also possible when both devices are powered, where each device alternately creates its own magentic field, with the secondary device as a target and vice versa in continuous rotation.}}