What type of evidence is typically collected through surveillance?

Digital footage or images are categorized as evidence collected through surveillance due to their ability to capture real-time activities, interactions, and events in a specific location. This type of evidence is valuable because it can provide an unbiased view of what transpired, often corroborating or contradicting other forms of evidence. Surveillance, by its nature, involves the systematic observation of people or locations, typically using cameras or other recording devices.

In the context of an investigation, digital footage or images can establish timelines, identify suspects or witnesses, and demonstrate the context of an event, thereby playing a critical role in building a case. The inherent reliability of video or photographic records makes them powerful tools for law enforcement in both gathering evidence and supporting or refuting claims made during an investigation.

While the other types of evidence mentioned, such as testimonial evidence, physical evidence, and documents, are important in their own right, they do not directly stem from the surveillance process, which focuses specifically on visual documentation through technology.