Do you have a defective electronic device at home that you want to have repaired? After a successful start of the pilot phase, the AIP is looking for participants for the rapair study „Efficient Use“. In cooperation with the IWF (Institute of Machine Tools and Production Technology, TU Braunschweig) and the ISSE (Institute for Software and Systems Engineering, TU Clausthal) as well as various project partners, we develop data-based business models for cascade use and extended product use of electronic devices. Further information can be found at https://www.effizientnutzen.de.