IST 195 Lecture Notes - Lecture 10: Saks Fifth Avenue, Barcode, Ibeacon
17 Jan 2018
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Document Summary
A system that transmits the identity of an object or person wirelessly using radio waves. Other auto-id technology: bar codes, optical character readers. Very small -- typically less than half a millimeter in size. Consist of an antenna and a microchip where information is stored. Can be put on almost any material except metal, which kills the signal. Usually less than three meters passing distance. Can be as little as five cents per tag. Can be more than per tag. Built with an antenna for communicating radio signals with the rfid tags. Readers may have multiple antennas for sending and receiving radio waves. Saks fifth avenue uses these for inventory. Barcode is just a number to be read; requires a line of sight; must be read individually; susceptible to human error. Rfid can be read simultaneously; can be tracked; can identify a single item; can be read without a line of sight.
