Amazon Go launches, letting people walk into shops and take things from the shelves

Amazon has launched a real-life shop where people can just pick things up and leave. Amazon Go, as it is calling the shop, uses a range of technologies to watch over people and see what they take from the shop. When they leave – which is done simply by walking back out the door – they'll be charged through their Amazon account for everything that they've picked up. To shop at the store, people just sign in at the door with their Amazon app, by pressing their phone against a sensor. That signs them in – and then everything else is done automatically.