NFC allows for the exchange of digital information, secure transactions and connection of electronic devices (smartphones, tablets, laptops, wearables) with just a touch. NFC stands for Near Field Communication. The communication range is short, of a maximum of about half an inch between the NFC tag and NFC reader.
The NFC chip built into modern smartphones is most commonly known as a tap-to-pay technology, however it can be used for a variety of functions, including access control for doors!
NFC works through a magnetic field from an NFC reader device being brought near to an NFC tag to create an electric current that is passed through the coil activating a transfer of stored data on the tag to the reader device.
Active NFC devices can send and receive data, allowing for storing and transfer of information. Doordeck encompasses active NFC technology.
Passive NFC can only send data. It is a one way transfer of communication. Passive NFC devices can run without power. e.g. key cards.
NFC is part of the RFID family however is designed for security. RFID can exchange data long range through radio waves, and like NFC between a tag and reader. Great for asset location and logistics.
However… The short communication range of NFC technology makes for a much more secure exchange of sensitive data, ideal for secure payments or in Doordeck’s case secure door access.
The main difference between NFC and Bluetooth is the frequencies they operate on. Bluetooth has a much higher frequency than NFC meaning its transmission time is much quicker. Additionally Bluetooth trumps NFC on range, with a transmission range of up-to 10m whereas NFC technology is only up-to half and inch. However with NFC having a lower frequency it means it uses less power when transferring data. NFC connection is also much simpler and secure with it only requiring a tap to link two devices.
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