On June 26, 2008, the US Patent & Trademark Office published Apple's patent application titled Mouse having an optically-based scrolling feature. Apple's patent generally relates to an input device for use in a computer system. More particularly, the present invention relates to a mouse having an optically-based scrolling feature. In other words, Apple's Mighty Mouse is about to dump its traditional scrollwheel for a next generation mini-touchpad. Other added features discussed in the patent include incorporating both audio and haptic-like feedback features and shifting to a more translucent or semi-translucent appearance.