Method for exchanging information between a household appliance and a mobile device , the method comprising the steps of: - providing optical information at a graphical user interface of the household appliance (S10); - aligning the mobile device with respect to the household appliance based on one or more markers displayed at a graphical user interface of the mobile device (S11); - receiving optical information at the mobile device by capturing said optical information provided at the household appliance by a camera of the mobile device (S12); - processing said received optical information at the mobile device in order to derive an information message included in said received optical information (S13); - providing said information message or information associated with said information message at a user interface of the mobile device (S14), wherein: - the graphical user interface comprises a seven segment display adapted to display one or more digits; - the step of aligning comprises capturing of an optical reference information (ORI) at the household appliance by means of said camera of the mobile device and arranging the mobile device and/or performing a zoom action at the mobile device such that said optical reference information (ORI) is displayed at the graphical user interface of the mobile device and said optical reference information (ORI) is fitted into said one or more markers, and - said seven segment display builds said optical reference information (ORI). - providing optical information at a graphical user interface of the household appliance (S10); - aligning the mobile device with respect to the household appliance based on one or more markers displayed at a graphical user interface of the mobile device (S11); - receiving optical information at the mobile device by capturing said optical information provided at the household appliance by a camera of the mobile device (S12); - processing said received optical information at the mobile device in order to derive an information message included in said received optical information (S13); - providing said information message or information associated with said information message at a user interface of the mobile device (S14), wherein: - the graphical user interface comprises a seven segment display adapted to display one or more digits; - the step of aligning comprises capturing of an optical reference information (ORI) at the household appliance by means of said camera of the mobile device and arranging the mobile device and/or performing a zoom action at the mobile device such that said optical reference information (ORI) is displayed at the graphical user interface of the mobile device and said optical reference information (ORI) is fitted into said one or more markers, and - said seven segment display builds said optical reference information (ORI). - the graphical user interface comprises a seven segment display adapted to display one or more digits; - the step of aligning comprises capturing of an optical reference information (ORI) at the household appliance by means of said camera of the mobile device and arranging the mobile device and/or performing a zoom action at the mobile device such that said optical reference information (ORI) is displayed at the graphical user interface of the mobile device and said optical reference information (ORI) is fitted into said one or more markers, and - said seven segment display builds said optical reference information (ORI). <EOS>