This is just one of the funny signs they have around here. Other signs get quite more ridiculous, like 'don't pee on the seat' at public washrooms. But that is beside the point of this post.
So, the sign about the automatic barrier is even more hilarious because my friend was telling me that while walking by one of these, he looked at the sign, and thought 'that's funny' and then ~dunk~ it hit him on the head! Thus... making this sign even funnier, because people actually do get hit on the head. haha
I laugh because he said it didn't really hurt. but he did the check to see if anyone saw and took off. (this friend will remain unnamed)