In many mobile applications, the finger has replaced mouse and key or button entry.

FORBES: Surrounded By Devices, We Inhabit A World of Increasing User-Centricity

While the Mobile Mouse has just the Start key and a scroll wheel, though, the bigger Comfort Mouse takes things a step further: the button there doubles as a capacitive surface you can swipe to toggle through open programs in Windows 8.

ENGADGET

But it isn't exactly efficient--more akin to typing a letter via hunt-and-peck with the mouse and the Mac's Key Caps instead of simply using your keyboard.

CNN: Create your own music on the Mac