Cellphones with cameras are not allowed on submarines... see how well that worked out with enforcing that rule... That includes marines at the gates doing random searches for contraband such as cell phones with cameras (saw a guy try to hide one inside his coffee mug once). I remember we weren't even allowed to bring phones that had the cameras removed, had to pay the extra money to the cell phone company for the "government" version of the cell phone for three times the amount as the normal phone.. just missing a camera or a spot for a camera.
Cell phones haven't been allowed on subs for longer than my time in the Navy because the entire submarine is a secret container, but the typical mantra was "I don't want to see it in operational spaces." My eng almost made my EDMC shit a brick when he allowed people to use iphones for music while field daying the engine room...message was 'there is no way you can accidentally take a picture of something back there with this thing. You have to press multiple buttons to do it. If you do that I will make sure you are punished to the maximum extent of the law.' We had no issues.
However, google 'cell phones on U.S. submarines' and you'll see a slew of recent cases in the press of idiots taking pictures of sensitive information and posting it on the internet. One CO even got fired for this because he ordered the OMBUDSMAN to post a bunch of pictures without the Nav (security manager) reviewing them... one of which had the FCS displayed in crew's mess with the big red SECRET banner on it.
I have heard that the sub force is trying to roll back to the pre-internet era in a draconian attempt to deal with the problem. The only issue here is that small PEDs like iPads are a god-send in an environment with such limited personal space.
Here is one such story. Notice that the IG investigating the idiots who set up the camera to take pics of female officers showering then discovered that there was a 'large breach in security.' We got here because we never adopted policy to match with the reality of shifting tech and culture.
http://www.military.com/daily-news/...ed-with-violating-navy-cell-phone-policy.html