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 on the identical concept as barcode except that the tactic of encoding data is different since barcodes require a line of sight optical scan. As an computerized 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 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 space of up to 1 MB. Passive RFID tags wouldn’t 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-yr span. Passive RFID tags are programmed with a particular set of data that can’t be modified 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 to be used 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, generally referred to as an interrogator. Tags are additionally called inlays and transponders. In technical phrases an inlay is solely a tag on a flexible substrate ready for conversion right into a smart label. The smart label can prolong the basic 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 by way of fog and snow, heat and dirt, and other environmentally tough conditions the place barcodes or another optical identification systems would fail. Their high reading speeds are one other advantage even though RFID technology is more expensive.
At current virtually every RFID implementation is completely different due to the performance requirements and price factors besides the signal transmission restrictions. They are used where barcodes prove inadequate however that does not men that RFID technology will exchange barcodes. The market is big enough for both to continue side by side.
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