In addition to its compact form factor (see the Silverlight demo), the Arc Touch has a capacitive touch scroll strip: move a finger slowly on the strip for controlled scrolling, or flick a finger for fast scrolling that can be stopped with a simple tap. The mouse uses a capacitive sensing technique and sensor pads to detect each position and velocity change, and also includes haptic feedback to simulate the bumps of a traditional scroll wheel. The strip also has three tap buttons: page up, page down, and a reprogrammable (Microsoft's IntelliPoint software required) middle click area.