In this video, Cody explains the flaws of using EMF meters in ghost hunting and paranormal investigations. They simply do not do what paranormal investigators think they do because of a lack of understanding on how to properly measure EM.
Some researchers believe that many of the experiences reported in allegedly haunted locations have a psychological explanation. Work assessing this psychological approach has involved examining the suggestibility and paranormal belief of people who tend to report unusual experiences in allegedly haunted locations.
This tutorial covers techniques for image analysis that are helpful in determining whether or not a photo has been edited / tampered in any way. Analysis of EXIF files and image quantization tables are covered. Both techniques will also work for images manipulated with “ghost photo” apps.