(1) An on-screen keyboard that is used with a mouse. An accessibility option for people with impairments, the keys are pressed by pointing to the key on screen and clicking the mouse.
(2) A keyboard displayed on a touchscreen. Also called a "soft keyboard," tapping the "virtual keys" with a stylus or finger is the same as pressing a real key on a keyboard. Contrast with physical keyboard. See soft key.
(3) A full keyboard displayed from a pocket-sized projector. When a person types, the key depressions are picked up by an optical or electronic beam.