We have those on our portables and in our cars. Your right, they don't do much good unless you put out your location. However, there are some models going through testing with our department that have GPS capability. We'll see how that turns out!
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AUDACES FORTUNA JUVAT
MOLON LABE
"There are those amongst us that live in rooms of experience that you and I can never enter...." - John Steinbeck
"Life's journey is NOT to arrive at your grave safely in a well preserved body, but rather to skid in a$$ backwards & sideways, totally worn out, shouting "holy $H!T, what a ride!" - Unknown
There's gotta be one fish down there dumber than I am drunk.