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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 is based mostly on the same idea as barcode besides that the strategy of encoding data is totally different since barcodes require a line of sight optical scan. As an automatic identification technology it reads encoded data with the aid of radio frequency waves. Its biggest advantage is that it doesn’t essentially want a tag or label to be visible to read the data stored.

RFID tags fall into categories, active or passive. Active tags have an inside 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 as much as 1 MB. Passive RFID tags should not have an external power source and instead use the facility generated from the reader. They’re therefore lighter, cheaper, and have an unlimited lifetime of operation, unlike active tags have a ten-year span. Passive RFID tags are programmed with a particular set of data that can’t be changed and being read-only, they operate as a license plate in a database.

Passive RFID tags have a low-power integrated circuit hooked up to an antenna and a protective packaging is used to enclose 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 exterior reader, typically referred to as an interrogator. Tags are also called inlays and transponders. In technical phrases an inlay is simply a tag on a flexible substrate ready for conversion right into a smart label. The smart label can extend the essential functioning of RFID by combining barcode technology and human readable information. Smart labels include 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 by means of 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 another advantage despite the fact that RFID technology is more expensive.

At present nearly each RFID implementation is totally different because of the performance necessities and cost factors besides the signal transmission restrictions. They’re used the place barcodes prove inadequate however that does not men that RFID technology will replace barcodes. The market is big sufficient for each to continue side by side.

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