Disclosed is a method for operating a data processing device of a respiration system comprising a respirator machine and a remote station physically separated from the respirator machine. Therapy data is transmissible by the data processing device between the respirator machine and the remote station and at least one authorization code is stored by a user of the respiration system in the data processing device to obtain an authorized access to the therapy data via the remote station. In this process, the authorization code is only provided to the user when the latter requests the authorization code by a user action to be performed vis-à-vis the data processing device.