The Garmin Inreach Explorer works great. When going out in the bush, just start it up , send an e-mail to yourself at home or to friends and they will know your whereabouts in real time, we have ours set up for 10 minute 'pings' and the battery lasts a full day ~24 hours a long with pre composed messages if you are going to be late or whatever.

Also, got one for the kids (adults) for xmas as they roam the bush a lot.