APR (Acoustic Pulse Recognition) is a touch technology in which the touch location is determined by analyzing acoustic waves generated at the moment of contact with the screen surface. When a user touches the screen (with a finger, stylus or other object), mechanical waves propagate across the glass surface and are detected by sensors placed at the panel edges. The controller compares the timing and characteristics of the received signals to a stored reference map, allowing it to pinpoint the touch location.
APR technology is resistant to dust, moisture and surface damage, and it works regardless of the conductivity of the touching object. This makes it suitable for industrial environments, public kiosks, multimedia information systems and any application where durability and the ability to use the screen with gloves are important.
