I find it really hard to take good photos of things that I’m not really supposed to take photos of. When there is a ticket control on the subway, basically the controllers block all exits from the subway, so that you have no way of telling them that you are not taking the subway. I always like the controls (unless if I am in an extreme hurry), as otherwise I’d feel cheated somehow. I really hate buying tickets for trains and such if no one checks it. But that’s me!
Ticket control on the subway