Or Amateur radio APRS units...with an off switch of course... http://www.findu.com/cgi-bin/find.cgi?call=N5POB-1
http://www.findu.com/cgi-bin/find.cgi?call=N5POB-9 Bill ----- Original Message ----- From: "Bill Mixon" <billmi...@worldnet.att.net> To: "CaveTex" <texascavers@texascavers.com> Sent: Thursday, May 10, 2007 11:18 AM Subject: [Texascavers] tracking GPS units > Pete is right. They can't track a GPS unit. But they can track any cell > phone that is turned on, because it keeps in contact with the towers so that > calls to you can be routed through the nearest tower. Also, some cell phones > now contain GPS units so that they can automatically supply your exact > location for 911 calls. This is in one way a useful thing, because a lot of > people call 911 on cell phones to report accidents but don't know where they > are. Still, it's one of those things that gets done without caring about the > privacy implications. Electronic toll road passes are another such thing. > And of course any time you use a credit or debit card, your location is > available in real time. Many cars' computers will rat on how fast you were > going and whether you were using your seatbelt before an accident. > Europeans are more sensitive to such things, having coped within living > memory with Nazis, fascists, and communists. Even if you aren't doing > anything likely to interest our government, you might worry about your > wife's detectives.... -- Mixon > ----------------------- > You may "Reply" to the address from which this message was sent, > but note the following permanent addresses for long-term use: > Personal: bmi...@alumni.uchicago.edu > AMCS: edi...@amcs-pubs.org, sa...@amcs-pubs.org > > > --------------------------------------------------------------------- > Visit our website: http://texascavers.com > To unsubscribe, e-mail: texascavers-unsubscr...@texascavers.com > For additional commands, e-mail: texascavers-h...@texascavers.com > > > --------------------------------------------------------------------- Visit our website: http://texascavers.com To unsubscribe, e-mail: texascavers-unsubscr...@texascavers.com For additional commands, e-mail: texascavers-h...@texascavers.com
