Technological devices with audio and visual capabilities have played a long and active role in policing. However, recent years have seen a dramatic rise in the range and sophistication of technologies being integrated into routine police work. Closed Circuit Television (CCTV) was first installed in London in the 1960s, later becoming mobile as redeployable cameras were introduced to chase crime hotspots around the city (Taylor and Gill 2014). Cameras could be considered the equivalent of the police notebook, but only if it is accepted that pages of the notebook can be rewritten, edited, modified; even torn out entirely. That is why redaction, or more specifically, limiting the discretion of police officers to select when to record, is critical to ensuring they bring greater transparency, fairness and accountability. Visual recording technology can bring a degree of objectivity, or at least provide some insight into contested events. That said, subjectivities enacted by the view of the camera must also be taken into consideration.
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机译：具有音频和视频功能的技术设备在警务中发挥了长期而积极的作用。但是，近年来，将常规警察工作中所采用技术的范围和复杂性急剧提高。闭路电视（CCTV）于1960年代在伦敦首次安装，后来随着可重新部署的摄像机被引入以追逐城市周围的犯罪热点而变得移动化（Taylor and Gill 2014）。摄像机可以被视为等同于警察笔记本，但前提是必须接受可以重写，编辑和修改笔记本的页面；甚至完全撕掉。因此，删节，或更具体地说，限制警务人员选择记录时间的自由裁量权，对于确保他们带来更大的透明度，公平性和问责制至关重要。视觉记录技术可以带来一定程度的客观性，或者至少可以为有争议的事件提供一些见识。就是说，还必须考虑到摄像机视角所产生的主观性。
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