I can only report that as the parent of a son soloing for three weeks, I'm glad he agreed  to take a Spot II and sends an "everyting is OK" message once each day.  I already planned to not worry till third day with no message. It is for our peace of mind.  Since many people have come and gone pre satellite, I belive he his fine and that I face more hazards here in the city. Otherwise, I'd have gotten him a PLB.

I think my wife will expoect me to carry Spot now when I go.