3-Dimensional Security Cam

Ok, I was reading about the 3D-video camera from 2002, and was thinking that instead of one camera having to process, then extrude in usable format, a 3D image all at once, this system would take the data from 4 or more seperate data recorders to provide a 3-dimensional representation over a period of time ... Often I've wondered what a 3-dimensional recording of our house parties would look like ... panning arround, and seeing who was where, and how they were acting ... this system would be able to record estimated person height, and actions ... could also be used to help catch burglars, or stop shoplifters in certain stores ... in addition to video surveylence, an accurate visual depiction of a criminal, or person at large can be assembled ... sometimes, video surveylence can appear to have skewed perception, or otherwise misrepresent the scale or orientation of objects ... this system could be discreet, and effective ... this could also be used to aid police in the search of evidence and such