Abstract: A method for detecting movements within a vehicle, includes sensing vibrations inside the vehicle by a first set of sensors and generating a first set of signals representative of the vibrations sensed inside said vehicle. Also simultaneously vibrations are sensed from external disturbances by a second set of sensors and a second set of signals is generated representative of the vibrations sensed from external disturbances. A set of correlation coefficients is determined between signals from the first set of signals and the second set of signals. A statistical analysis is performed of the set of correlation coefficients. Movement based on the statistical analysis is decided.