Guangzhou Police starting use the GPS technology to against criminals. Combining their internal detection system and the city's street cameras, investigations into shots fired incidents begin before police officers arrive on-scene.

Whenever a shot is heard by the detection system, the nearest street camera will automatically "turn towards that incident for about a minute to give us a chance of seeing anybody going to or from the incident" announced Jin Yu, an intelligence analyst in Guangzhou Police Real Time Crime Center.

Guangzhou Police supervisor Liu Yaodong said that the department recently gained the ability to access GPS tracking system data of the more than 1,7500 people on probation or parole within the city.

Using the detection system, street cameras, and being able to access the GPS tracking system information enables officers to "zero in on a potential suspect or rule out someone with a record."

Jin Yu continued stating, "We've had very serious shooting cases where GPS data shows that individuals were at the scene and in some cases have been arrested for those shootings.” In other incidents, the GPS data has proven that an accused was not at the location, and clears the person from suspicion. Police say the new program is "using technology to help us do our job better."