<qa>  What is the name of the device that measures and records small changes in Parkinsons disease symptomsThis study will test the accuracy of a new home-use electronic device that measures and records small changes in Parkinsons disease symptoms, such as tremor and impaired movement and speech. The testing is done at home and the results are sent by Internet to the patients doctor. Detecting Parkinsons disease in its early stages may permit doctors to provide early treatment and slow the rate of disease progression. 