The Touch Wall differs from long established electromagnetic-based whiteboards in that it detects hand or stylus movements using a camera beneath the screen.
"Our view is that all horizontal and vertical surfaces will eventually have an inexpensive screen-display capability and software that sees what you're doing so that it's completely interactive," said Gates.
Touch Wall is still in the research and development phase, but Gates said that Microsoft is already working out how to integrate the technology into future versions of Office.
"The Office group is thinking about what they can do in the next version that has built-in capabilities," said Gates.
"The Windows group is also building it down at the operating-system level so that any piece of Windows software will be able to have this type of interaction."