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A computer mouse can be difficult for a person with a disability to use. The user needs to be able to grasp the mouse, move it around in a controlled fashion on a table, and often hold down a button while making these movements. There are mouse alternatives which are devices that may let a person move the computer cursor more easily with their hand, or by not using hands at all. They include trackballs, joysticks, touch screens, head pointers, and touch pads. One area that still remains a problem is controlled movement of a computer mouse for persons that suffer from tremors from a variety of causes. 

Your task is to create a computer mouse and/or its operation so that as the person moves the mouse on a pad or surface, the tremors are reduced sufficiently to enable the person to accurately carry out their tasks on the screen including doing detailed work such as line drawing.