The Yorkshire Dales countrywide park in England is a favorite site for walkers, hikers and climbers.
If folks get into problems, teams of volunteers, like all those at Swaledale Mountain Rescue, will go out to help them.
BBC Click’s Paul Carter put in two times with the group, who are trialling diverse technologies, to find out how they could make a variation.
See a lot more at Click’s web page and @BBCClick
