GMPI is a group that takes a scientific approach to ghost hunting. We have night vision equipment, analog and digital audio recorders and audio programs to analyze sounds and EVP (Electronic Voice Phenomena). We also use an EMF Meters (Electromagnetic Field) . All kinds of thermal reading equipment are used, as well. We check the barometric pressure and record it every 15 minutes. Each member keeps notes on how he or she is feeling through the investigation. So we have the human input in the investigation. We have recently added our DVR system. It is an 16-channel system capable of recording 240 fps (frames per second) real time. Our DVR system includes 1 Tb of storage and can back up information on DVDs. We can watch 16 rooms at the same time. At times, we may also use 6 High Resolution IR cameras, 4Ultra High Resolution IR cameras and have just added