Interactive panels, when connected to your desktop / notebook computer and a projector, allow you to face your audience whilst you control, edit and annotate computer applications directly from the interactive panel. As you are used to writing normally with a pen on paper, then using the cordless pen you simply write or draw directly onto the screen in the same way. There is no keyboard or mouse to worry about, as the pen acts as the mouse. Using an interactive panel is very similar to using an interactive whiteboard, except the panels are usually 15", 17" or 18" in size. However, the screen image can be projected through a multimedia projector to various sizes onto a projector screen, making it perfect for large auditoriums and lecture halls as well as smaller classrooms and training rooms. The panel normally has a small A-shaped stand so you can prop it up or lay it down flat on the desk or rest it on your knee. Interactive panels are portable making them ideal for training sessions, police, fire and ambulance emergency services and military establishments for training and briefing sessions or within universities and colleges. They can also be used with some video conferencing systems.