How do security strips in library books work?

Subject: How do security strips in library books work?

Date: Sat Sep 29 14:51:23 2001
Posted by Trent
Grade level: teacher/prof School: No school entered.
City: No city entered. State/Province: No state entered. Country: No country entered.
Area of science: Engineering
ID: 1001789483.Eg

Message:


I realize that "tattle-tapes" and other kinds of security strips can be 
sensitized and desensitized so as to trigger (or not trigger) exit alarms in a 
library.  Can you explain how this works?

Re: How do security strips in library books work?

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