Abstract: A method includes detecting a user interaction with a particular region of a graphical user interface (GUI), and determining that the user interaction will be consumed by a particular user interface (UI) component that is overlaid by a plurality of UI components configured to allow the user interaction to pass through to the particular UI component. The method also includes, based on determining that the user interaction will be consumed by the particular UI component, determining a cumulative opacity of the plurality of UI components at the particular region of the GUI. The method further includes determining that the cumulative opacity exceeds a threshold opacity and, based on determining that the cumulative opacity exceeds the threshold opacity, blocking the particular UI component from consuming the user interaction.

Abstract: A system and method for determining the heading of a moving object comprising a first sensor adapted to register its angular velocity and to generate a first signal in response to said registered angular velocity, at least a second sensor adapted to register its angular velocity and to generate at least a second signal in response to said registered angular velocity, a processor adapted to receive said first signal and said at least second signal, wherein said first sensor, said second sensor and said processor are located at said moving object, and wherein said first sensor and said second sensor are located at a distance from each other on said moving object, and wherein said processor is further adapted to determine the heading of said moving object based on said received first signal and said at least second signal.