RFID or Radio Frequency Identification, is the new technology talked about for product identification and data storage that can be utilized where barcodes fail. It’s based mostly on the same concept as barcode except that the method of encoding data is totally 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 does not necessarily need a tag or label to be visible to read the data stored.
RFID tags fall into categories, active or passive. Active tags have an internal battery with a read and write option, allowing 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 exterior energy supply and instead use the ability generated from the reader. They are 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 special set of data that cannot be modified and being read-only, they operate as a license plate in a database.
Passive RFID tags have a low-power integrated circuit attached to an antenna and a protective packaging is used to enclose it relying on the application it goes 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, generally referred to as an interrogator. Tags are additionally called inlays and transponders. In technical terms an inlay is solely a tag on a flexible substrate ready for conversion right into a smart label. The smart label can lengthen 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 through fog and snow, heat and dust, and different environmentally powerful conditions where barcodes or any other optical identification systems would fail. Their high reading speeds are another advantage although RFID technology is more expensive.
At present nearly every RFID implementation is totally different due to the performance requirements and price factors besides the signal transmission restrictions. They’re used the place barcodes prove inadequate however that doesn’t men that RFID technology will change barcodes. The market is big sufficient for both to proceed side by side.
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