every library has an alarm system, and each book always has a barcode (to scan) and yet many of these books go missing in the library i volunteer at! how on earth do i stop them from disappearing? how do these theives bypass our alarm system? from what i know removal of these scan codes do not stop the system from sniffing you out!goshand my head librarian is going crazy can u guys help??PS: i\'m not sure what category to put this so i\'m just gonna try out one i think receives lots of answerers.Unfortunately, thieves are always one step ahead of us all I, too, work in a libraryI\'ve actually caught people stealing booksWe had a magnetic tattle strip systems installedIt was easily to bypassAll the patron had to do was drop items into a bag with
aluminum foil inside (several layers of)We lost a lot of Video Tapes that way back in the dayThis trick also works for basic RFID security as well (at least in some librariesnot so much in your local mall, which obviously use much better security devices)Also, there\'s nothing to prevent a patron from buying a demagnetizer from an online retailerThey can walk in with these, demagnetize a book, and walk outNo one the wiser3M told us they were working on a much better solution that would be available in 2008We\'re still waiting for them to tell us if it\'s ready.Other related question