There are provided a rangefinder device which is capable of detecting that improper distance measurement through glass or the like has been performed, even when the glass is positioned at a certain or considerable distance from the camera, and a camera incorporating the rangefinder device. The method and system comprise mapping commands to system directives of the game console and generating an input signal having predefined characteristics corresponding to the input device being utilized to engage the system directives. It senses charge nondestructively with a complete charge removal, which avoids generation of kTC noise.