"If you are facing difficulty to control mouse cursor movement by using hand or would like to experience a new way of controlling your computer using innovative method, Natural Point has a new series of product lines that can suit your needs. Named as SmartNav 4, it is an infra-red based communication with accurate and easy control mechanism using head movement, intend to replace hand movement targeted for those that suffers ergonomic or spinal cord injuries." - JohnDu™