Human interface

Human interface (HI) or human-computer interface (HCI) refers to direct interactions between users and computers, typically involving input through hardware devices such as keyboards, mice, trackpads, or touch screens, through some type of user interface.

Notable human interface designers at Apple

 * Don Norman, user experience architect.
 * Susan Kare, HI (human interface) Macintosh artist.
 * Bruce Tognazzini, original author of Apple's Human Interface Guidelines.