The present disclosure enables remote device management. Prior to the stacking step, the step is envisaged of providing, in an integrated manner, at the top surface of the first body a confinement and spacing structure that confines inside it the elastic spacer material and supports the second body at a distance from the first body during the stacking step. Alternatively, a conductive layer can be used instead of a second multilayer structure. A transmission unit transmits the data input via the operation screen to the web server when the hardware key is operated by a user while the operation screen is being displayed based on the content including the description. The second conductor-free region is at least partially surrounded by the conductor structure of the gradient coil unit and is fashioned as a second RF field return volume in connection with the first RF field return volume. This overflow prediction is particularly applicable to the implementation of addition operation using the carry-save format in high speed arithmetic units.