A reader asked about PLBs.
The SPOT device seems to me to be the best with all wilderness issues
considered. I have worked with several SPOTS since they came out. The real deal is that one has to preplanned what is to be done IF the emergency button is pushed-- Who will be notified? What are they suppose to do? Have you up dated this info? The cost is low $150 and the annual is low. A cheap device for the back country with long delayed wilderness medical help.