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 is based on the same idea as barcode besides that the tactic 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 does not 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 area of as much as 1 MB. Passive RFID tags wouldn’t have an exterior energy supply and instead use the ability 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-yr span. Passive RFID tags are programmed with a special 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 attached to an antenna and a protective packaging is used to enclose it relying on the application it goes to be used for. The IC has an on-board memory that stores data. The IC makes use of the antenna to receive and transmit information to an exterior reader, usually referred to as an interrogator. Tags are additionally called inlays and transponders. In technical phrases an inlay is just a tag on a flexible substrate ready for conversion right into a smart label. The smart label can prolong the essential 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 can be read by fog and snow, heat and dust, and different environmentally powerful conditions the place barcodes or some other optical identification systems would fail. Their high reading speeds are one other advantage even though RFID technology is more expensive.
At present almost every RFID implementation is completely different because of the performance necessities and cost factors besides the signal transmission restrictions. They are used the place barcodes prove inadequate however that does not men that RFID technology will change barcodes. The market is big sufficient for each to continue side by side.
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