Ultra-short-throw projectors are mounted directly on the wall or on a whiteboard. This means the board remains height-adjustable, there are no distracting shadows, and the teacher is not dazzled. As the projector and projection surface form a single unit, the cabling is compact and the sound comes from the front.
Depending on the model, interactive functions using a stylus or touch are possible. This is particularly helpful in primary schools, as it enables pupils to follow the movements involved in writing.