The glasses can send me this information thanks to a built-in camera linked to software that analyses Picard’s facial expressions. They’re just one example of a number of “social X-ray specs” that are set to transform how we interact with each other. By sensing emotions that we would otherwise miss, these technologies can thwart disastrous social gaffes and help us understand each other better. Some companies are already wiring up their employees with the technology, to help them improve how they communicate with customers. Our emotional intelligence is about to be boosted, but are we ready to broadcast feelings we might rather keep private?