In 2005, the British Devon and Cornwall police conducted a small-scale miniature wearable camera test. Practice has shown that wearable cameras can strengthen the interaction between the police and citizens, and bring a sense of security to both parties; reduce the number of complaints from citizens and correspondingly reduce crimes.
From 2006 to 2007, the Plymouth Police Department in the United Kingdom once again evaluated wearable cameras and found that the number of arrests, prosecutions and confessions has increased, investigations and evidence collection have been more direct, case handling efficiency has been improved, and the intensity of document files has been reduced, thereby reducing trials Number of people.
However, there is no obvious evidence that the use of wearable cameras can improve people's impression of the police. The support rate of local citizens for this approach is still unclear, and its transparency and legality are unclear.
At the beginning of 2012, the Rialto police in California launched a one-year "licensed as proof" experiment. During the specified time, 54 uniformed patrol policemen were selected. Half of them wore law enforcement recorders (called camcorders at the time) and the other half
did not. The test results are quite different. The complaint rate of police officers wearing law enforcement recorders has been reduced by
88%, and police violence incidents have been reduced by 60%; police officers who have not worn law enforcement recorders have basically remained the same.
Constable Garry Cunningham and his colleagues are the first police officers in the United States to wear police law enforcement recorders.
He hesitated at first, saying that the video opportunity would be detrimental to the police's law enforcement, but after a period of practice,
his view turned 180°.
In an interview with Al Jazeera (U.S.)'s "Tonight America" column, he said: "I think it protects me more than it protects the public."
With the passage of time, the scientificity and rigor of law enforcement recorders have been improved. The investigation found that police officers wearing law enforcement recorders are much more efficient in arrests than those who do not wear law enforcement recorders. The complaint rate has dropped significantly, and the police are more cautious in law enforcement. , The level of civilization has improved.
The first generation of shoulder-mounted law enforcement recorder, recording and storage are separated, the function of the law enforcement recorder is relatively single, equivalent to an MP4; the traditional law enforcement recorder does not have an intercom function, and needs to carry a walkie-talkie.
In 2012, on the basis of the first-generation product, according to feedback from law enforcement agencies, the second-generation law enforcement instrument was launched. The performance has been improved, but the function is relatively vague and there is no unified standard.
In 2013, the law enforcement recorder moved from general clear to high-definition, and at the same time formed a relatively uniform industry standard.
By 2019, it has developed to a 4G high-definition intelligent law enforcement recorder, which can realize global positioning, infrared, night vision, fisheye lens, 4G wireless image transmission, and the background management platform conducts video transmission and voice intercom with the law enforcement field. The screen can monitor the front-end scene in real time, and perform functions such as communication command for front-line law enforcement personal.
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