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RFID Technology - Some Basic Facts
RFID or Radio Frequency Identification, is the new technology talked about for product identification and data storage that can be utilized the place barcodes fail. It is based on the same concept as barcode except that the tactic of encoding data is completely different since barcodes require a line of sight optical scan. As an automated identification technology it reads encoded data with the aid of radio frequency waves. Its biggest advantage is that it doesn't essentially need a tag or label to be seen to read the data stored.
RFID tags fall into two categories, active or passive. Active tags have an inside battery with a read and write option, permitting modification of data. The memory dimension of the tag is variable with some tags having memory space of up to 1 MB. Passive RFID tags shouldn't have an external energy supply and instead use the facility generated from the reader. They're subsequently lighter, cheaper, and have an unlimited lifetime of operation, unlike active tags have a ten-12 months span. Passive RFID tags are programmed with a special set of data that cannot be changed and being read-only, they operate as a license plate in a database.
Passive RFID tags have a low-energy integrated circuit hooked up to an antenna and a protective packaging is used to enclose it relying on the application it goes to be used for. The IC has an on-board memory that stores data. The IC uses the antenna to receive and transmit information to an external reader, typically referred to as an interrogator. Tags are additionally called inlays and transponders. In technical terms an inlay is simply a tag on a versatile substrate ready for conversion right into a smart label. The smart label can prolong the basic functioning of RFID by combining barcode technology and human readable information. Smart labels embrace an adhesive label embedded with an RFID tag inlay. Thus they provide the benefits of read range and the unsupervised capability of tags, with the flexibility and comfort of on-demand label printing.
RFID systems have variable frequency ranges, and the frequency level decides their use for applications. Their biggest asset is their operation without a line-of-sight and without contact. Thus they are often read through fog and snow, heat and dust, and different environmentally robust conditions the place barcodes or another optical identification systems would fail. Their high reading speeds are one other advantage regardless that RFID technology is more expensive.
At present nearly each RFID implementation is different due to the performance necessities and value factors besides the signal transmission restrictions. They are used where barcodes prove inadequate however that does not males that RFID technology will exchange barcodes. The market is big enough for each to proceed side by side.
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