Are fake security cameras effective? The answer is a resounding "Yes."

Fake security cameras have helped to prevent many crimes. Mounted in high profile, totally visible locations, these cameras are not hooked up to anything, they mostly operate for a long time on batteries and sometimes have a few flashing lights or other obvious characteristics to make them look as if they are doing something.

Many a would-be robber has changed his or her mind about entering someplace illegally after spotting one of these dummy security cameras looking right at them. With today's technology, an inexperienced thief really has no way to know whether or not he's looking at a wireless, state of the art surveillance device or a fake security camera. Some of them actually pan back and forth, although these require more frequent battery changes.

Fake security cameras are especially effective in areas that you expect to be covered by security cameras. For instance, many of the cameras in subway stations around the world are fake security cameras and nobody can tell the difference. During hard times, when the crime rates inevitably rise and cities are strapped for cash, the ratio of fake cameras to real ones was about 2-to-1 in some metropolitan areas.

Knowing that the fake cameras would be regarded as real, the fakes were sprinkled in among the real ones to provide an extra incentive for would-be robbers and thieves to practice their trade in another location. Except for the lack of recorded footage provided by the real cameras, dummy security cameras are almost as effective in reducing crime rates in subways as the real ones are.

Only sophisticated thieves can tell -- at a distance -- whether they are being observed by a real security camera.