RFID/NFC TECHNOLOGY
RFID and NFC are two closely related wireless communication technologies. They are used globally for a vast number of applications such as supply chain management, logistics, access control, identification, authentication, asset tracking and contactless payments.
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RADIO FREQUENCY IDENTIFICATION (rfid)
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radio chips |
RFID is a type of communication technology in which data between RFID readers/payment terminals and RFID tags (RFID transponder) of a smart card, a vehicle key or passport are exchanged using radio transmission within a distance and without any contact (wireless data transmission).
A RFID system uses radio waves to communicate. So RFID enables a one way wireless communication, typically between an unpowered RFID tag and a powered RFID reader (interrogator) without establishing physical contact and beyond the line of sight. The transmission/transaction between RFID tag (with RFID chip) and RFID reader passes through the air on a given transmission frequency (LF, HF, UHF). The RFID tags embedded in contactless smart cards, smart keys and passports store data which they broadcast 24/7/365. |
These RFID transponders are passive and so do not have their own power source for emitting RFID signals.Instead, they are powered by the electromagnetic energy transmitted from the RFID reader for communication.
They can thereby be scanned at distances for radio data transmission. For more informations about RFID/NFC: www.rfid-off.com |
RADIO FREQUENCIES
RFID operates at a range of radio frequencies each with their own set standards, protocols and scan distance, for example:
/ 125 KHz LF (low frequency) / 13.56 MHz HF (high frequency) / 800-950 MHz UHF (ultra high frequency) Each frequency range is assigned to a radio frequency band (LF, HF, UHF). |
radio systems
Further components of RFID systems are often software and IT-systems, for example RFID middleware and servers with a database as backend (to process for example payment transactions or verifications).
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nEAR FIELD COMMUNICATION NFC
NFC is an extension of HF RFID standards. NFC therefore shares many properties with RFID for example the communication without a direct line of sight.
There are however key differences: / NFC is capable of two way communication and can therefore be used for more complex interactions. It communicates both ways making data transferable to and from the chip. / NFC is limited to communication at close proximity (but this distance depends for example also of the power of the RFID reader). / Only a single NFC tag can be scanned at one time (but there is still a risk of interferences and clashes). These properties were developed primarily to enable more secure mobile payments and it is for this reason NFC is limited to singular and close proximity interactions. An important by-product is that NFC is now available in the majority of mobile phones. |
security of rfid systems
The security of RFID systems is dependent upon the cryptographic security mechanisms used, such as procedures for authentication, encryption, pseudonymization, integrity protection and access protection.
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Benefit for your customers: Ensuring confidentiality and integrity while enjoying the benefits of Radio Frequency Identification RFID and Near Field Communication NFC.
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COMPANY
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