The invention relates to a method for servicing and/or monitoring a field device (1) of process and automation technology. The invention includes that at least one photograph is taken of at least one section (2) of the field device (1), that the photograph is evaluated and/or processed in such a manner, that there results at least one piece of information concerning an access location (11) for field device data related to the field device (1), and/or information for identification of the field device (1), that a request for data is made to the access location (11), and that, in response to the request for data, field device data are supplied. Furthermore, the invention concerns a corresponding field device.