Abstract: The invention relates to a device for the control of functions via biometric data, in particular for access control, comprising at least one camera (2) for recording biometric data, at least one memory (5) for storing biometric data of authorized persons, and a computing and controlling unit (3) with at least one interface (6) for connecting a unit (7) to be controlled, e.g. a door lock, with the at least one camera (2) being arranged in a detachable recording module (1) that is connected to the computing and controlling unit (3). To provide a handy, versatile and inexpensive device which is difficult to be manipulated, it is provided for encoding or encrypting means (26) and respective decoding and decrypting means (27) to be arranged in the recording module (1) and in the computing and controlling unit (3), or in the unit (7) to be controlled, respectively. Moreover, an identifying or authenticating unit (22) may be provided in the recording module (1) and/or in the computing and controlling unit (3).

Abstract: Waste gases and other noxious substances which are formed in connection with chemical processes and the manufacture of devices such as semiconductors and covalent hydrides and element organic compounds, etc. are treated so as to remove the noxious components.