A motion controlled handheld device includes a display having a viewable
surface and operable to generate an image. The device includes a motion
detection module operable to detect motion of the device within three
dimensions and to identify components of the motion in relation to the
viewable surface. The device also includes a motion response module
operable to identify a base reference position, to track the motion of
the device in relation to the base reference position, to modify the
image in response to the motion, to detect a predetermined pattern of
motion of the device, to maintain the image without adjustment during the
predetermined pattern of motion, to detect a completion of the
predetermined pattern of motion, and to reset the base reference position
upon detecting completion of the predetermined pattern of motion.