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 identical concept as barcode except that the method 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 does not essentially need a tag or label to be seen 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, allowing modification of data. The memory dimension of the tag is variable with some tags having memory area of as much as 1 MB. Passive RFID tags don’t have an external power supply and instead use the power generated from the reader. They’re therefore lighter, cheaper, and have an unlimited lifetime of operation, unlike active tags have a ten-yr span. Passive RFID tags are programmed with a particular set of data that cannot 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 goes for use for. The IC has an on-board memory that stores data. The IC uses the antenna to receive 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 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 can be read via fog and snow, heat and dirt, and other environmentally robust conditions the place barcodes or any other optical identification systems would fail. Their high reading speeds are another advantage though RFID technology is more expensive.
At current almost each RFID implementation is completely different because of the performance requirements and cost factors besides the signal transmission restrictions. They’re used the place barcodes prove inadequate however that does not males that RFID technology will replace barcodes. The market is big enough for each to proceed side by side.
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