From smartglasses to smartwatches, tech companies like Apple, Google and Samsung are investing big money in technology that you can wear. They’re designed to keep us eternally connected, fully fit and super smart. But will they go mainstream or are they still the preserve of the gadget geeks? Evan Davis and guests discuss how fitness bands that measure how far you walk and how deeply you sleep could transform our healthcare. And hear about the intelligent fabric that’s set to revolutionise the way US and British soldiers are kitted out.