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From: ART100@psuvm.psu.edu (Andy Tefft)
Newsgroups: sci.electronics
Subject: Re: Library anti-theft walk-thru device...????
Message-ID: <91127.230228ART100@psuvm.psu.edu>
Date: 8 May 91 03:02:28 GMT
References: <050691.224256WDBURNS%MTUS5.BITNET>
 <3206@sirius.ucs.adelaide.edu.au>
Organization: Penn State University
Lines: 5

I have a friend who uses an electric wheelchair, and
at his local video store, the alarm goes off when he leaves the
store, but not when he comes in (you go through the detector either
way), whether he has any movies (properly desensitized) or not.
Why would this be?