RFID Technology - Some Fundamental Details

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 is based mostly on the same concept as barcode except that the strategy of encoding data is completely 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 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 inner battery with a read and write option, permitting 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 should not have an external energy source and instead use the ability generated from the reader. They are 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 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 attached to an antenna and a protective packaging is used to enclose it depending on the application it is going for use 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, generally 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 into a smart label. The smart label can extend 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 are often read by fog and snow, heat and dirt, and different environmentally tough conditions where barcodes or every other optical identification systems would fail. Their high reading speeds are another advantage though RFID technology is more expensive.

At present almost every RFID implementation is different because of the performance necessities and value factors besides the signal transmission restrictions. They are used the place barcodes prove inadequate but that does not males that RFID technology will replace barcodes. The market is big sufficient for both to continue side by side.


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