Detecting manipulations on housings of automatic machines containing cash involves detecting, processing, evaluating sound waves/mechanical vibration patterns emitted by housing

摘要

The method involves detecting sound waves and/or mechanical vibration patterns emitted by the housing using at least one sensor (1), and processing and evaluating (2) the sound waves and/or vibrations. Noise is filtered out and the filters and/or evaluation algorithms used are adapted to the current housing. Signals in the low and high frequency ranges are filtered out and converted to voltage signals proportional to manipulation signals. Independent claims are also included for the following: an arrangement for implementing the method.