Location-based firearm

Source: Wikipedia, the free encyclopedia.

A location-based firearm is a gun that uses electronic technologies such as



The first locationized gun was invented by John Martin in 1984.[1] Although locationized guns could prevent much crime and accompanying deaths and injuries, they have not been commercially developed. An important reason for that is because legislated restrictions would be required for conventional guns, and those restrictions would be difficult to pass in some markets.

Operating principles, advantages, and technologies

The main advantage of locationized guns is that they can satisfy the right to possess arms for defense of homes and businesses while being useless for many crimes that can be committed away from those homes and businesses.

Other advantages of locationized guns depend on them having electronic circuitry and electronic control over firing. Those technologies make it relatively easy to design them to communicate with a

communication system to provide information or to be externally prevented from firing regardless of location.[2][3][4]


GPS asset tracking technology can allow a locationized gun to transmit a message through a cellular network
to its owner if the gun is removed from its normal location. GPS tracking could then allow its location to be known by its owner and/or law enforcement to assist in recovery of the gun.

Communications can allow police agencies to learn that a locationized gun is or was at a location of interest, thereby facilitating crime solving or allowing precautions to be taken before arriving at the location. Police agencies can also be automatically notified with information about when and where a locationized gun has been fired. Most importantly, police agencies would be able to prevent firing of the gun in the case of its theft, a police raid, shootout, threatened suicide, restraining order, etc.

Limited firing time: Early technology

A locationized gun of this type cannot be fired unless it has remained motionless for a relatively long time, e. g. 24 hours. Following that time period, there is only a relatively short time period that it can be fired after being picked up for use, e. g. 5 minutes.[5] After its firing time period expires, it must undergo its motionless period again to allow firing. Consequently, the usefulness of this gun is restricted to locations relatively close to where it is kept, e.g. its owner's property. A demonstration model having timing and movement sensing circuitry was produced in 1989.[6]

Restricted area of enabling signal reception: Later technologies

This type of locationized gun cannot be fired unless it is located within the range of a signal that enables firing of the gun.

wireless broadcast throughout the area where firing of the gun is allowed. Cable length or reception distance determines the area where firing is possible. A temporarily fixed transmitting location can be a portable base station that must remain motionless for a relatively long time period, e. g. 24 hours, before its signal transmitting begins.[11]

Triangulation and memory of allowable firing locations: Latest technologies

A locationized gun of this type uses a system of radio frequency

cell phone signals to determine its location.[12][13][14]
Firing is then allowed only if the gun's location is electronically determined to be within the area stored in memory of where its firing is allowed, such as a home, business, or hunting area.

See also


  1. ^ Gross, Barry (28 May 1984). "New Handgun Could Be Used For Self-Defense, But Not Crime". The Washington Post.
  2. ^ Firearm Global Satellite Positioning System Tracking System, retrieved 2016-01-07
  3. ^ Firearm and system for notifying firearm discharge, retrieved 2016-01-07
  4. ^ Electronic device for a firearm, retrieved 2016-01-07
  5. ^ US Patent 5192818, John M. Martin, "Means for reducing the criminal usefulness of hand weapons", issued 1993-3-9
  6. ^ R. A. Lesmeister "A Cordless .38" American Firearms Industry, April 1989 p. 24, 25.
  7. ^ US Patent 5068989, John M. Martin, "Means for reducing the criminal usefulness of dischargeable hand weapons", issued 1991-12-3
  8. ^ US Patent 5168114, Jerome M. Enget, "Automatic gun safety device", issued 1992-12-13
  9. ^ US Patent 6314671, Armand Gering, "Fire arm equipped with an enabling system", issued 2001-11-13
  10. ^ US Patent 6412207, Caleb Clark Crye, Dmitry Yavid, Efrain Luke Rodriguez, "Firearm safety and control system", issued 2002-7-2
  11. ^ Barry Gross. New Handgun Could Be Used For Self-Defense, But Not Crime. The Washington Post. p. WB19. 28 May 1984.
  12. ^ US Patent 6438887, John M. Martin, "Dischargeable hand weapons having reduced criminal usefulness", issued 2002-8-27
  13. user-generated source
  14. ^ US Patent 6415542, Cary Lee Bates, Eric John Nelson, John Matthew Santosuosso, "Location-based firearm discharge prevention", issued 2002-7-9