Abstract: The present invention relates to wearable device (1) adapted to detect contacts of fingers (F) on a surface (S), and to identify the responsible finger. It comprises move sensors adapted to collect the vibrations resulting from the contact of the fingers on a surface. It comprises a memory comprising reference vibration profiles (T), corresponding to the impact of at least one finger (F) of a user (U) to a surface (S). A computing unit (32) is configured allows to identify the finger responsible for the impact sensed by the move sensors (10, 10a, 10b). The invention further relates to a manufacturing process of such a device and to a method of sensing the contact of a finger on a surface.