2006-11-25 09:23:18 · 5 answers · asked by Amanda L 1 in Science & Mathematics ➔ Engineering
i could imagine all these books may have a so called RFID tag in its back. thats a small chip carrying information about the book (maybe just a catalog-number) which can be read with a transceiving device.
Same technology is used in some supermarkets where they make use of this kind of technology in a way that you may not need to put all things you buy on the conveyor.
They can simply scan all the tags and make a list.
However its a fast and effective way to keep track on things.
2006-11-25 10:11:35 · answer #1 · answered by blondnirvana 5 · 0⤊ 0⤋
it's how they keep people from steeling... just like in a store. When they swipe the book it de-magnetizes the security strip so that you won't set off the alarm
2006-11-25 14:42:52 · answer #2 · answered by eeeeeeeeclipse 4 · 0⤊ 0⤋
I believe it "de-magnetizes" it, so it won't set off the security sensor. but I could be wrong. It probably feeds data to the No Such Agency, too....
2006-11-25 09:26:56 · answer #3 · answered by Gwynneth Of Olwen 6 · 0⤊ 0⤋
It keeps the gate from beeping just like at superstores
2006-11-25 09:27:59 · answer #4 · answered by ladyP 1 · 0⤊ 0⤋
it reads the Bar Codes on the book itself so then they know who has the book and when it should be returned.
2006-11-25 09:26:38 · answer #5 · answered by ravene 2 · 0⤊ 0⤋