A process for operating a packaging transport system in which objects packed in packaging which is bacteria-impermeable but gas-permeable are sterilized, whereafter the packaging, possibly after removal of some packaging parts, is sterilized again on its outer side in a sterilization chamber which acts as a transfer lock, and then guided into a sterile clean room. For the old fashioned light switch, the convex front has a central area of sufficient height to receive a switch element of the old-fashioned toggle light switch. A logic gate has a first input connected to an output of the first latch and a second input that receives a scan mode signal. A step radially extended is left on the surface 13a of the ink receiving layer 13 and set not greater than 1.