Getting out in nature for a hike or a trail run can offer an escape from the modern world. But that doesn't mean techie innovations should be left at home, especially when they enhance the experience in a quiet, unobtrusive way. If you want to get there or get back faster and safer, these lightweight devices can help.
http://www.latimes.com/health/la-he-gear-hiking-20110704,0,5557701.column