one / laptop mouse

Touch Pad and Mouse, Different Interface but the Same Use.
Nowadays we do not even need to carry an adapter with releasing low-power & high-efficient laptops. However we still have to carry a mouse because a touch pad is uncomfortable to be used for a long time. As a feeling of a grip is important for a mouse, a mouse has reduced portableness of a laptop. So we suggest a way to enhance portableness of a mouse.