Pocket-Lint: Let's clear something up here, Xbox SmartGlass is an app and it'll be available for iPhone, iPod touch, iPad and Android devices, as well as Microsoft's own Windows 8 and Windows Phone operating systems. It is designed to convert your existing gadgetry into a companion screen, and as such may just blow Wii U out of the water.
The idea is simple. Download the app, hook it up to your Xbox Live account and away you go. It talks to your Xbox 360 and helps to control entertainment and interacts with games that have purposely been adapted to be compatible.