[Colin]

I've read that one of the main reasons they have cameras is due to problems with sexual harassment, etc. I also read that every now and then they have problems with foreigners in the onsen/sento, as to foreigners bathing with other people can be pretty different (and also some people thought it would be a good location to be drunk at)

Personally, I didn't mind the cameras when I saw them, I just kept my towel on didn't make that big of a deal out of it.

Now had I been doing innapropriate things to the camera it would only give them more reason to have the cameras (Not in the sense that they want to watch, in the sense that people are doing weird things)