I don't think there is much distinction between fake cameras and real cameras in the bazar world of BART. I use BART daily, on days when I choose to be a "good citizen of the planet" and take my bike to the station, I would park it in front of the camera, securely lock it, only to return to find things missing from the bike.
When I ask the station attendant, with his screen full of cameras on full display to unsuspecting BART riders, what happened, I was told that since they can't tell if someone fiddling with a bike is the owner or a crook, so they don't bother looking. On another occasion I asked the police officer taking the report why they have such a high theft problem in a supposedly good neighborhood. It seems that many of the cameras are not even recorded, and even if they were, the police didn't have the time to review the video, at least for any small crime. If you were to visit all of the BART stations on any day of the week, you would find at least half the stations with bike frames securely locked to the rack with the wheels and seat missing.
The moral of my bike story is: if you want to keep your bike safe, leave it at home and drive to the station.
