A control device for controlling operation of a controlled apparatus is disclosed. The control device may include a sensor configured to acquire a first biometric signal, a second biometric signal, and a third biometric signal. A difference between the first biometric signal and the second biometric signal may be utilized to determine movement of a controlled object. The controlled object may pertain to the operation of the controlled apparatus. At least one of the first biometric signal, the second biometric signal, and the third biometric signal may be utilized to initiate performance of a first function of the controlled apparatus. Further, one or more of the first biometric signal, the second biometric signal, and the third biometric signal may be utilized to determine an identification of a user.