To Riley, the best way to add immediate impact to your user interface design is with motion. “My top tip for enhancing the feel of a web page or app is very simple: animation. I’m not talking ...

An example of a common command-driven interface is MS-DOS. The MS-DOS command to display all files on c:\ would be: dir c:\. The user is offered a simple menu from which to choose an option.

For example, a smartphone can recognize scrolling up or down a page, zooming in, swiping right, or pressing and holding on an icon. To translate this to a skin-based interface, the camera needs to ...