The »pyKey« makes this possible. You can open every lock with it, and administrate electronic systems with an opening code. At the same time, it provides the required power for the system. For this, it uses both static as well as one-time valid codes. They can either be called up from wherever you are or automatically transferred via digitalised processes.  No internet access to »pyKey«-components is required - they are standalone, offline and not powered by electricity.