Larry Dighera wrote:

I also thought these things were being touted as all-but-eliminating
false signals?

How would that be accomplished? An improved inertia switch???

I think I see the sematics you were getting at there (false signal vs
unconfirmed situation), but for the record, the 406's are registered
into a database with contact information. So when an activation is
detected somebody can get on the phone and (try to) contact the
registered operator to determing if the aircraft is actually in
trouble.