Siemens Aktiengesellschaft

Walter-Jürgen Hofheinz

Dietmar Scharf

Karl-Heinrich V Stein-Lausnitz

A method of securely transmitting information between a user device and a central computing device, located in a self-contained network. The method includes: sending a request from the user device to a second computing device located outside of the self-contained network to connect with the central computing device; transmitting from the second network device to a third computing device located in the self-contained network a message containing a unique identification; storing in a database, via the third computing device, the unique identification when the identification is validated, and sending, via the third computing device, a confirmation message to the second computing device; and initializing a connection with the central computing device through the user device, using information contained in the confirmation message to initialize a connection with the central computing device, and the connection through the central computing device is accepted when access by the user device is authorized.

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Munich, Germany

Walter-Jürgen Hofheinz