Fecha de publicación: 16/09/1988 Fuente: WIPO "pollen" The invention relates to a method of monitoring the use of one or more vehicles 1 according to which various parameters representing the conditions of use of a vehicle 1 are recorded on a medium 2 for the purposes of subsequent interpretation, this recording requiring the prior use of a confidential identification code. The invention also relates to a device for monitoring the use of one or more vehicles 1, including, in each vehicle 1, an encoder reader 3 intended for reading and recording information via a micro-circuit card 2 and including a keyboard 4 allowing the acquisition of a confidential code.