The NewSoft WMS100 Image Wireless Projector Adaptor connects to any VGA-compatible projector. With the included software, called Presto, up to three computers can control a presentation and capture and display their own screens at any time.
The device itself ($280) looks like a walkie-talkie with an antenna on one side and a VGA/XVGA connection. It is compatible with three Wi-Fi standards (802.11a, b and g), and the software even enables slides to be exchanged among participants, bypassing the screen entirely.
Read more on the New York Times site.

