THE BEST SIDE OF YEALINK MEETING BOARD 86

Entrance-projection interactive whiteboards have a movie projector before the whiteboard. A drawback of entrance-projection whiteboards is that the presenter, standing before the display screen, have to extend her or his arm with or and not using a stylus to stop casting a shadow.A Wii-centered IR system was invented by Johnny Chung Lee, PhD. in 20