Abstract: In an approach to allowing a user to operate a computing device while preventing and/or rehabilitating an injury, three-dimensional gestures of a user are translated into corresponding movement of a cursor on a display device. Different gestures can indicate the same motion of the cursor. As the user gestures to move the cursor, the software determines, based on a history of use specific to the user, whether the user can continue without feeling pain or fatigue. If it is determined that continued use will cause or is likely to cause pain or fatigue, the software can request the user to take a break, or can switch the gesture or motion required by the user to move the cursor in a similar manner.

Abstract: A computer receives movement information, wherein the movement information is sent by a computer mouse input device in response to an end-user moving the computer mouse input device. The computer determines a frequency at which an end-user typically tremors based on the movement information received during a specified time interval, by utilizing a fast Fourier transform operation. The computer determines current tremor frequencies of the end-user based on additional movement information, by utilizing the fast Fourier transform operation. The computer modifies a value assigned to a warning counter in response to at least one magnitude of one of the current tremor frequencies exceeding a magnitude of the frequency at which the end-user typically tremors. The computer sends an electronic notification in response to the value assigned to the warning counter exceeding a limit of an acceptable level of hand tremor.

Abstract: Disclosed is software allowing a user to operate a computing device while preventing and/or rehabilitating an injury. Three-dimensional gestures of a user are translated into corresponding movement of a cursor on a display device. Different gestures can indicate the same motion of the cursor. As the user gestures to move the cursor, the software determines, based on a history of use specific to the user, whether the user can continue without feeling pain or fatigue. If it is determined that continued use will cause or is likely to cause pain or fatigue, the software can request the user to take a break, or can switch the gesture or motion required by the user to move the cursor in a similar manner.