If you've ever been on the receiving end of "death by PowerPoint," you'll know just how tiresome a passive presentation can be. Interphase hopes its new Penvue (pronounced Pen-View) portable interactive display system can maybe help spice things up a little. The hand-held unit is about the size of a mouse, and has a corresponding wireless receiver that plugs into anything with a VGA connection. Using "invisible targets" based on missile technology, you can digitally draw on whatever screen you are using it with, altering pen color and thickness as you go. You can also flip it into mouse-mode for regular na
