National Geographic magazine recommends carriage of a distress beacon as the best safety tool for climbers and trekkers.
Thousands of people go missing every year while exploring mountains, forests, rivers, and deserts. Safety experts tell us how to avoid mishaps—and what to do if you need rescuing.
https://www.nationalgeographic.com/travel/article/safety-tips-from-first-responders-you-need-to-know