Patent ID: 8402391

Claim:
A method of enabling a user to select functions to be implemented by a computer operating a large digital surface, the method comprising the steps of: invoking, by the user, a menu to be generated by the computer operating the large digital surface; and generating, by the computer, a menu at a location where the menu was invoked by the user, the menu being configured as a pie-shaped menu centered approximately at the location where the menu was invoked, the pie-shaped menu having an active region extending in an arc and an occluded area, the active region not extending into the occluded area such that when the user interacts with the menu, the user's hand is generally placed over the occluded area and does not extend over the active region; wherein an orientation of the occluded area is based on a direction vector between the location where the menu was invoked and a location of contact between the large digital surface and the user's hand that will interact with the menu, and wherein the direction vector enables the computer to distinguish between right-handed users and left-handed users.