The false alarm rate would be way too high to be use useful just from people losing them. Maybe if you built it into a bracelet or anklet that's hard to take of

The false alarm rate would be way too high to be use useful just from people losing them. Maybe if you built it into a bracelet or anklet that's hard to take off, and there was a huge penalty for a false alarms? Also if something happens to incapacitate you for several hours out in the wilderness, you'll mostly likely be dead before help arrives--even with a beacon. A locator that can be remotely activated (periodically wakes up to check for an activation signal) could be pretty useful, but I think it would mostly be used to locate bodies. Requiring solo hikers to carry something like that might be good alternative to parks requiring rescue insurance.