A unique application, Ghost radar to detect the existence of ghosts.
From the http://spudpickles.com/node/34
Ghost Radar is a portable application designed to detect paranormal activity. Currently supported portable devices include the iPhone, iPod touch, iPad, BlackBerry and Android devices. Ghost Radar attempts to detect paranormal activity by using various sensors on the device on which it is running. Like traditional paranormal detecting equipment Ghost Radar employs sensors that measure electromagnetic fields, vibrations, and sounds. However, traditional paranormal equipment can be easily fooled when simple mundane bursts of normal electromagnetic fields, vibrations and sounds occur. Ghost Radar sets itself apart by analyzing the readings from sensors giving indications only when interesting patterns in the readings have been made.
Ghost Radar employs a proprietary algorithm to analyze the quantum flux. This application does NOT detect EMF nor gravity. Readings for various sensors are analyzed to detect QUANTUM Fluctuations. Interpretations of the sensor readings are displayed graphically as blips on the radar along with numeric and textual readouts on the VOX. Use your Ghost Radar to hunt for odd changes in the flux. Hunters of all types may find anomalous areas of their environment where readings simply can't be explained. You be the judge. Are the results of your hunting evidence of paranormal activity?