What is WIDI? According to Intel the WIDI technology lets you use your TV as a display for your computer, wirelessly.
What can I use it for? Wireless Display lets you been pictures from any PC in the house to a TV. That means no more HDMI Cable connecting you laptop to your HDTV. You can sit your family down, get comfortable, and enjoy a family movie with no hassle.
What do I need? All you need is a PC with Wireless Display technology, such as the HP Pavilion dm4-2070us, and a NETGEAR Push2TV WIDI adapter to plug into your TV.
It is Interl's new wireless display technology. At the moment, WiDi is only available for computers running with a Windows operating system.It uses Wi-Fi as its transmission medium. See reviews at http://www.widiadapterreviews.com