The Presenter works fine and the presentation is well controlled over long distances. Unfortunately, the laser spot on the big screen in the auditorium is completely invisible. Probably you need for this large backlit screen, the laser sword of a Jedi Knight in order to achieve any effect on the screen (and if there is a fire hole). I am very glad to have this thing - it's a lot more comfortable, unattached and independent to speak of the PC and not to constantly grope on the keyboard.
