Abstract: A computer mouse for use with a computer, including: a base with a lower surface configured for sliding across a work surface and having at least one portion forming part of a base contact plane; an upper body extending from the base; a contact sensor; an optical movement sensor system capable of detecting mouse movement relative to the work surface, a communication system, for communicating computer-readable movement and/or position data signals from the device to a computer, wherein the mouse is configured to operate in a first mode when orientated in a first orientation, and a second mode when orientated in a second orientation when the base contact plane is inclined with respect to the first orientation, and wherein the optical movement sensor system is configured to capture an image of the work surface in both the first and second modes to determine device movement in both modes.

Abstract: A computer pointing device including: a base portion with a lower surface adapted for sliding across a work surface, a spine portion, projecting substantially upward from said base portion and having a thumb-engaging surface on a first lateral side of the spine and at least one index fingertip and/or middle fingertip-engaging surface on a second lateral side of the spine opposing said first lateral side. A keyboard with an altered arrangement of function of keys, such as an enlarged or truncated or no spacebar or capable of an altered appearance in accordance with keys being re-mapped to sensors on a pointing device. A keyboard with a virtual screen display, which may be made semi-transparent by activating a sensor on a pointing device. A computer with a recess capable of accommodating a mouse device.

Abstract: A computer pointing device including: a base portion with a lower surface adapted for sliding across a work surface, a spine portion, projecting substantially upward from said base portion and having a thumb-engaging surface on a first lateral side of the spine and at least fingertip-engaging surface on a second lateral side of the spine opposing said first lateral side. A keyboard with an altered arrangement of function of keys, such as an enlarged or truncated appearance in accordance with keys being re-mapped to sensors on a pointing device. A keyboard with a virtual screen display, which may be made semi-transparent by activating a sensor on a pointing device. A computer with a recess capable of accommodating a mouse device. A locked scrolling or zooming means, using any pointing device, in which scrolling or zooming in a defined direction is proportional to the distance travelled by the device, irrespective of direction of movement of the device.