Technology has become an unparalleled part of every aspect of our lives, dominating our work, our social lives, our hobbies and even our healthcare. But at what point does our changing relationship with technology become a problem? And how do we fix it?

People prefer wearable devices that are unobtrusive, fit into daily life and existing habits, and look stylish. But even if all these boxes are ticked, do they really want to wear technology on their wrists, faces and around their necks?

“Google policy is to get right up to the 'creepy' line and not cross it,” says the company's CEO. But when does insightful personalisation become intrusive? And how do brands build lasting relationships with consumers concerned about being spied on?

With half a billion wearable devices shipping in the next few years and going straight onto wrists, shoes, glasses and lapels, soon interacting with smart cities will seem as 'normal' as checking Facebook.