Pictures taken in the morning in an almost empty station. When I was just starting with first pictures, I was contacted by railway staff through an announcement (by using the intercommunication system). They told me, that it is only allowed to take photos, when I have an official approval by local "Bogestra" (responsible for Bochum and Gelsenkirchen railway and buses). As I optained the approval before by mail I did not react at all (how, they were just using the loudspeaker in the station to contact me...), as I thought, they will come to me, if they like to see the approval. I decided to just take more photos. Ten minutes later I was contacted again. "Special announcement for the man with the camera. You are only allowed to take photos, with a special approval". I nodded and took out the paper from my trouser pocket and motioned with it. "Ah, you have an approval?" I gave them a thumb up. "Okay, have fun!" So I was accompanied by cameras when being there :-) Even when it was a bit embarrassing for me, it was also fun to use this two-way communication with the staff there. I would have been shocked, if they would asked me to hold the permission into camera, so they can take a closer look, what is written there... Big brother is watching you everywhere.