Kinect SLS Cameras are becoming more and more popular with paranormal investigators. The camera works by projecting its own invisible infrared laser grid over a wide field of view. The grid is made up of over one million tiny dots. This structured grid of laser dots is what gives the device its name, SLS, or Structured Light Sensor. The camera's sensor is able to calculate the distance between these infrared dots in order to build a three-dimensional model of its view.

This three-dimensional model doesn't rely on visible light or colors. Instead, it "sees" a physical representation of the space and objects around it. This means that if something moves within its field of view, there will be a change in the distance between the dots, which the camera recognizes as movement.

The reason this technology is used by paranormal investigators is that the camera's software has the ability to recognize and...