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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’s based mostly on the same idea as barcode besides that the tactic of encoding data is 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 does not necessarily want a tag or label to be seen 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 size of the tag is variable with some tags having memory area of as much as 1 MB. Passive RFID tags wouldn’t have an exterior energy source and instead use the facility generated from the reader. They’re due to this fact 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 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-energy integrated circuit connected 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 makes use of 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 solely a tag on a versatile substrate ready for conversion 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 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 can be read through fog and snow, heat and dirt, and different environmentally tough conditions where barcodes or every other optical identification systems would fail. Their high reading speeds are one other advantage regardless that RFID technology is more expensive.

At present almost every RFID implementation is different because of the performance necessities and price factors besides the signal transmission restrictions. They’re used where barcodes prove inadequate however that does not males that RFID technology will replace barcodes. The market is big sufficient for both to continue side by side.

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