Getting stuck in the outdoors without having anyway to get help is not ideal. The McMurdo FAST FIND 220 is a personal beacon locator that helps you alert search & rescue services with your location in case of an emergency. The device doesn’t require a subscription to work. It can operate for 24 hours continuously.
The FAST FIND 220 is pretty compact, so you can easily carry it with your own things. You can find out more about it here.