Abstract: The present invention relates to the field of information display and information playback on medical fluid management machines, in particular dialysis machines in which there should be a simple and reliable transmission of patient features and machine features to a mobile computer. The present invention is based on the problem of making available to the operating personnel information pertaining to the medical fluid management machine or a treatment to be performed therewith and doing so in a simple and convenient manner such that certain information should be readable only by certain groups of people. In this regard methods and devices have been proposed with which specific graphic codes are generated, encrypted and displayed or applied, these graphic codes being inputable and decodable by a mobile computer.

Abstract: The present invention relates to the field of information display and information playback on medical fluid management machines, in particular dialysis machines in which there should be a simple and reliable transmission of patient features and machine features to a mobile computer. The present invention is based on the problem of making available to the operating personnel information pertaining to the medical fluid management machine or a treatment to be performed therewith and doing so in a simple and convenient manner such that certain information should be readable only by certain groups of people. In this regard methods and devices have been proposed with which specific graphic codes are generated, encrypted and displayed or applied, these graphic codes being inputable and decodable by a mobile computer.