RFID is an abbreviation of Radio Frequency IDentification.
The RFID technology is based on radio frequency communication between an identificator (a card, keyring, label, etc.) and a reader. You can learn more here.
No matter how designed and what frequency and software are chosen, each RFID system has the following components:
- Identificator – a label or tag attached to each object to be identified. Read more.
- Reader – a device that communicates with the identificator and performs reading and recording. Read more.
- Antenna – generates the electromagnetic field for connection with the identificator. The correct positioning and geometry of the antenna are of key importance for the reading distance. The size and type of the antenna depend on the working frequency of the RFID system. Very often the antenna is incorporated in the reader.
- Controller – the module enabling communication with and control of the reader from a computer. Controllers are obligatory if the information read from the identificators is to be used in computer systems. The controller also relays the instructions to the identificators when data recording is performed.
- Software – to process, store and visualize the information in the RFID system. Using the stored information, it is possible to prepare queries, to transmit data to another system, to give instructions to the controller, etc.
- Communication infrastructure – to connect the components in the system. This can be done wirelessly, by means of a LAN, serial interface, etc.
RFID works in several frequency bands: low frequency (LF), high frequency (HF), ultra high frequency (UHF). Read more here.
NFC (Near Field Communication) is an extension of High Frequency (HF) RFID standards анд operates at 13.56 MHz. NFC therefore shares many physical properties with RFID…
NFC technology works only at close distances - typically around a few centimeters. This close range makes NFC perfect for interaction and means that tags can't 'accidently' be read or used for unwanted tracking.
NFC allows the transfer of data between two devices, such as a mobile phone and NFC tag.
Typically, NFC is used to pass data from one device to the other. So you might use NFC to pass data from an NFC enabled mobile phone to another NFC enabled mobile phone, from a mobile phone to a payment terminal or from an NFC tag to a mobile phone.