There are also stories of people carrying their units, but not using them except maybe once a day. Then when they go missing, SAR teams don't have much of a clue where to go looking.
If an unplanned emergency occurs (as in sudden death), if the SPOT or InReach user was running it in tracking mode, it is pretty easy to go to the last place the unit pinged the satellite system. Carrying one but not using its features ~to save batteries~ isn't very wise.
