We often talk about wearable tech in the context of the best running watches or best sleep trackers, but what gadgets are helping out the rock climbers of the world?The popularity of rock climbing and its sister sport, bouldering, has sky-rocketed in recent years, thanks in no small part to the success of Nat Geo’s Oscar-winning climbing documentary Free Solo. At the center of that heart-stopping film is Alex Honnold – a now 38-year-old climber who, in 2017, became
