If you can use Ninja Skills and hide the cam and make sure there is No Light, then you may or may not be able to get pics/video.
For the safety of the Scareactors, the experience of those behind you, and so you don't have TM's and security stop you mid-house or at the end of the house, don't risk it. You can take pics with the scareactors walking around outside, provided they don't try to steal your soul.