In a device for identifying couplings between a first and a second component of a system, one of the two components is provided with an identifying unit. A testing unit is operatively connected to the second component. The identifying unit contains information on the first component. The testing unit is designed to identify and process said information. The testing unit is further designed such that said unit permits or prevents a coupling between the first and the second component dependent on a result of the processing of the information. Said device enables a shared use of system components only when same are permissibly coupled.
