I am in Tokyo right now teaching at a seminary for five days. Walking home from the train station last night to our friend Keiko’s home I passed this sign:
Basically, the sign says, “Warning: Perv*rt in the area: please call 110 if you see one”.
Haven’t seen those signs posted along Main Street, U.S.A….
The Takameter 
Sue, In Osaka city there are signs everywhere saying, “chikan akan”. That’s Osaka-ben for (loosely translated) don’t be a pervert or no perverts allowed.