Google launches its £229 video doorbell in the UK that uses facial recognition to greet visitors

Google's £229 (€279) video doorbell is now on sale in Europe. Named Nest Hello, the smart doorbell uses facial recognition technology to identify and greet visitors. It then sends you a voice or text notification so you know who is outside. If you're not at home, Nest Hello lets you see and talk to visitors using the microphone in your smartphone. It can also double up as a security camera to tell you if strangers are lurking nearby.