A method for remote maintenance of a technical device by a maintenance technician by a maintenance computer as well as a computer-readable storage medium on which is stored information for execution of the method on a data processing device. In the method, a remote data connection is established between the maintenance computer and the technical device, electronic access information dependent on a scope of intended access to data stored in the technical device is transmitted from the maintenance computer to the technical device an electronic identifier identifying the maintenance technician is transmitted from the maintenance computer to the technical device, an approval by an operating personnel of an access is determined by the technical device dependent on access information and the identifier, and by the technical device, electronic authentication information is generated by the technical device dependent on the determination of the approval.