A method and device for processing a signal (CRK) provided by a bidirectional sensor, the method includes the following steps: generation of a first signal (CRK_CNT) utilizing all the slots of the signal provided by the sensor, generation of a second signal (CRK_DIR) utilizing the slots corresponding to a first direction of transit, connection of the first signal (CRK_CNT) to the input of the first electronic component, connection of the second signal (CRK_DIR) to a second component, detection by the second component of edges of the signals received, determination of the direction of transit as a function of the presence or otherwise of an edge on the second signal (CRK_DIR) when a rising and/or falling edge is detected on the first signal, change of the value of the predefined threshold (THMI) in the first component upon each detection of an edge.