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RFID Technology - Some Fundamental Facts
RFID or Radio Frequency Identification, is the new technology talked about for product identification and data storage that can be used the place barcodes fail. It's primarily based on the identical concept as barcode except that the tactic of encoding data is completely different since barcodes require a line of sight optical scan. As an computerized identification technology it reads encoded data with the aid of radio frequency waves. Its biggest advantage is that it doesn't necessarily want a tag or label to be visible to read the data stored.
RFID tags fall into classes, active or passive. Active tags have an inner battery with a read and write option, permitting modification of data. The memory measurement of the tag is variable with some tags having memory house of up to 1 MB. Passive RFID tags don't have an external energy source and instead use the ability generated from the reader. They are subsequently lighter, cheaper, and have an unlimited lifetime of operation, unlike active tags have a ten-year span. Passive RFID tags are programmed with a special set of data that can't be modified 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 surround it depending on the application it is going for use for. The IC has an on-board memory that stores data. The IC uses the antenna to obtain and transmit information to an external reader, generally referred to as an interrogator. Tags are additionally called inlays and transponders. In technical terms an inlay is just a tag on a flexible substrate ready for conversion right into a smart label. The smart label can lengthen the fundamental functioning of RFID by combining barcode technology and human readable information. Smart labels embody 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 convenience 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 dirt, and other environmentally powerful conditions the place barcodes or every other optical identification systems would fail. Their high reading speeds are another advantage although RFID technology is more expensive.
At current virtually each RFID implementation is different due to the performance necessities and price factors besides the signal transmission restrictions. They are used the place barcodes prove inadequate but that does not men that RFID technology will substitute barcodes. The market is big sufficient for each to proceed side by side.
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