The new Xbox will always be listening to you, even when it's switched off.

Xbox One comes bundled with a new version of Microsoft’s Kinect peripheral, and this must be connected to the console for the console to function.

Moreover, the console is able to be powered on with a voice command – that is, it’s always listening.

Kinect’s voice recognition functionality has been expanded in other ways too: voice commands may now be used to switch between games, movies, the web, and TV, among other things.

“The all new Kinect is now an essential and integrated part of the platform,” said Microsoft.

“By having it as a consistent part of every Xbox One, game and entertainment creators can build experiences that assume the availability of voice, gesture and natural sensing, leading to unrivaled ease of use, premium experiences and interactivity for you.”

The new Kinect is so sensitive, it can detect the user’s heartbeat while they are exercising, as well as and recognise audio that's personalised to specific individuals.

"This is rocket science level stuff," said Xbox's Marc Whitten at today's event.

The Kinect boasts a 1080p RGB camera that captures video at 30 frames a second.