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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 where barcodes fail. It’s based mostly on the same idea as barcode except that the method 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 necessarily need a tag or label to be visible 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 size of the tag is variable with some tags having memory space of up to 1 MB. Passive RFID tags would not have an external energy 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-12 months span. Passive RFID tags are programmed with a particular set of data that can not be changed and being read-only, they operate as a license plate in a database.

Passive RFID tags have a low-energy integrated circuit attached to an antenna and a protective packaging is used to surround it relying 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, usually referred to as an interrogator. Tags are also called inlays and transponders. In technical phrases an inlay is simply a tag on a versatile substrate ready for conversion right into a smart label. The smart label can extend the fundamental 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 mud, and different environmentally robust conditions where barcodes or another optical identification systems would fail. Their high reading speeds are one other advantage regardless that RFID technology is more expensive.

At current virtually every RFID implementation is different as a result of performance necessities and value factors besides the signal transmission restrictions. They’re 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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