Abstract: An extendable stylus operated with a mouth, the stylus having an extending portion configured to have an adjustable length, a conductive tip that can interface with a touch screen device, the conductive tip located at a first end of the extending portion, a mouthpiece that engages the mouth of a user, wherein the mouthpiece is located at a second end of the extending portion opposite the first end and a control mechanism disposed at or near the second end of the extending portion, wherein the control mechanism is configured to control the length of the extending portion based on an operation by the mouth of the user.

Abstract: An extendable stylus operated with a mouth, the stylus having an extending portion configured to have an adjustable length, a conductive tip that can interface with a touch screen device, the conductive tip located at a first end of the extending portion, a mouthpiece that engages the mouth of a user, wherein the mouthpiece is located at a second end of the extending portion opposite the first end and a control mechanism disposed at or near the second end of the extending portion, wherein the control mechanism is configured to control the length of the extending portion based on an operation by the mouth of the user.

Abstract: A motion analysis system (10) in which sensor elements (20) attached to movable body segments record movement parameters including angular velocity and acceleration. A control device (40) receives the movement parameters and determines an overall motion of the movable body segments. The overall motion is analysed against an acceptable motion model to determine whether the overall motion is within acceptable limits. The sensor elements (20) and control device (40) are lightweight and can be worn during normal movement activities thereby allowing monitoring of work-based activities, such as lifting or typing. The invention is useful for detecting and correcting problems leading to lower back disorders and repetitive strain injuries.