Abstract: An apparatus for use with an image display device configured for head-worn by a user, includes: a screen; and a processing unit configured to assign a first area of the screen to sense finger-action of the user; wherein the processing unit is configured to generate an electronic signal to cause a change in a content displayed by the display device based on the finger-action of the user sensed by the assigned first area of the screen of the apparatus.

Abstract: An apparatus for use with an image display device configured for head-worn by a user, includes: a screen; and a processing unit configured to assign a first area of the screen to sense finger-action of the user; wherein the processing unit is configured to generate an electronic signal to cause a change in a content displayed by the display device based on the finger-action of the user sensed by the assigned first area of the screen of the apparatus.

Abstract: A method of selectively deactivating features on a computing device is described herein. The method can include the step of determining an examination time period for one or more students in which each of the students is in possession of a computing device. The examination time period can be set aside to enable the students to participate in a testing exercise. The method can further include the steps of generating a deactivation signal and transmitting the deactivation signal. The deactivation signal, when received at the student computing devices, can cause the student computing devices to selectively deactivate predetermined features of the student computing devices. The predetermined features may be based on a factor of providing an unfair advantage to a student during the examination time period.