Patent ID: 8706440

Claim:
An apparatus for registering time and location of a weapon firing event of a weapon comprising: a portable housing adapted to be removably mounted directly on the weapon; a microcontroller disposed in the housing; a pressure sensor disposed at the housing and adapted to determine pressure data based on air pressure in proximity to the weapon and provide said pressure data to said microcontroller; an accelerometer located at the housing and adapted to determine acceleration data of the weapon based on movement of the weapon and provide said acceleration data to said microcontroller; a location sensor located at the housing and adapted to determine a time and a location of the weapon and provide said time and said location of the weapon to said microcontroller; and a memory disposed in the housing and coupled to said microcontroller, wherein said microcontroller is adapted to; determine if a potential weapon firing event occurred based on the acceleration data; determine if the potential weapon firing event occurred based on the pressure data; and determine the weapon firing occurred only when both of the acceleration data and the pressure data independently and concurrently indicate that the potential weapon firing event occurred; and wherein said microcontroller is adapted to retrieve and then transmit said acceleration data, said pressure data, said time, and said location of the weapon when the weapon firing occurred for storage in said memory.