I suggest a radio collar.

It’s the only way to be sure.

Bolingbrook hiker rescued in Alaska — again — after journey into wild

[snip]

“If police see me (hiking) in the woods, they’re going to arrest me,” a rueful [Don] Carroll said during a cell phone interview Tuesday.

It was the second time this summer that Carroll had to be rescued. He got lost in June after climbing Mount Healy in Denali National Park.

“The chief ranger said he’s not going to come looking for me anymore,” Carroll said.

I don’t begrudge money to park rangers and/or rescue programs, but when you get lost in the woods for the second time through lack of planning you are, indeed, what @eddiebear said.  Hence the radio collar: because I don’t think that you can quite count on this kid to bring a GPS unit the next time he goes outside…

Moe Lane