RFID or Radio Frequency Identification, is the new technology talked about for product identification and data storage that can be used where barcodes fail. It is based mostly on the identical concept as barcode except that the method 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 necessarily want a tag or label to be seen to read the data stored.
RFID tags fall into two classes, active or passive. Active tags have an internal battery with a read and write option, allowing modification of data. The memory measurement of the tag is variable with some tags having memory area of up to 1 MB. Passive RFID tags don’t have an external power supply and zinedine01 instead use the ability generated from the reader. They’re subsequently 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 attached to an antenna and a protective packaging is used to surround it depending 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 also called inlays and transponders. In technical phrases an inlay is solely a tag on a versatile substrate ready for conversion right into a smart label. The smart label can lengthen 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 through fog and snow, heat and dust, and different environmentally powerful conditions the place barcodes or another optical identification systems would fail. Their high reading speeds are one other advantage though RFID technology is more expensive.
At current almost every RFID implementation is totally different because of the performance requirements and cost factors besides the signal transmission restrictions. They’re used where barcodes prove inadequate but that doesn’t males that RFID technology will substitute barcodes. The market is big enough for each to proceed side by side.