What is RFID ?
RFID (Radio Frequency Identification) is a wireless communications technology used in applications to identify and receive information about humans, animals and objects, either in motion or idling.

How work RFID ?
An RFID System consists of a Reader and a Transponder, which is also called Tag. The data - and the transmission of energy - take place without any contact through electromagnetic waves. The transponder is made up of a microchip that is connected to an antenna. A unique and irreversible identification number is already determined in the production of the microchip. A passive transponder has no own energy source and is thereby completely maintenance-free.

The reader (RFID reader) controls the routine for communication with the transponder through different function and logic components. An external data interface transmits the data for the analysis and further processing to an external computer system (PC).

RFID-System:

The microchip and antenna are embedded with the transponder in an encasement, thus making it insensitive to external influences. The Tags, can be applied even in an extremely difficult periphery. The transponders can also be deciphered although covered by a non metallic material or encasement. The read and write range is dependent on the size of the transponder's antenna. This can be within a gap of a few centimetres up to over a meter. Depending on the application, such as smart cards, labels, coins, glass tubes, etc., the transponder can be custom-built into different forms. Most of the systems are distinguished with 125 KHz (LF) and 13,56 MHz (HF).

Application advantages:

• a wide range of areas of application
• no visible contact between Tag and Reader
• great diversity in applications even in harsh enviroments
• forgery proof (unique ID)
• completely maintenance-free
• faster and safer data transmission
• combination with conventional data carriers
  

Which advantages brings RFID ?
In comparison to other identification carriers, such as barcodes, the data can be altered as often as possible through a multi-recordable transponder. This allow for the information to be available at any time without connecting to a databank. An anti-collision function (multi-Tag-capable) permits the recording and separate processing of several Tags in the read-write phase at one time. A cryptic encoding ensures a secured data exchange between the reader and the transponder.

RFID - is the optimal technique for:

• stock management and logistics
• access control, attendance control
• animal identification
• package and luggage identification
• industrial automation, automotive applications
• merchandise control and labeling
• ref. of origin (product and trademark protection)
• quality control / - waste prevention - and dangerous goods logistics

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