A method and a device for removing acidic materials, such as CO2 and H2S, with limited energy consumption are provided. A service center, at a second location, which is not in the vicinity of the at least one wireless communication terminal, is in communication with the terminal so as to receive the digital data therefrom and to generate a permanent record of the data for delivery to the at least one of the customers. A list of placed processprocessing node pairs specifying a pairing of the placed processes and the processing nodes on which the placed processes have been placed is maintained so that a user can review the then-current set of process placements. It is to be appreciated that the principle of pattern-specific maximum likelihood transformations can be extended to a large number of pattern matching problems and, in particular, to other biometrics besides speech.