The culmination of the work for many private investigators ends in a courtroom. Evidence obtained by private detective services working on behalf is admissible and useful in court, however, it is important to understand that all evidence must be legally obtained. No matter what type of evidence you’re collecting, doing it legally or within the parameters of the law with appropriate and complete documentation is a necessity.

Here are the types of evidence used by private investigators:

1. Physical Evidence

It is important to handle physical evidence in such a way that it does not compromise the integrity of the evidence. Meaning, that before ever touching a piece of physical evidence, it must be documented to include where the evidence was found, the date and time that it was found, the general conditions in which it was found, how it was procured, and many more. It is imperative that the collection of evidence is done with great care. If you found a bullet casing, for example, document it first then collect it without touching it so as not to transfer your DNA to the object, then store it in an appropriate container where it cannot be damaged.

2. Digital Audiovisual Evidence

Digital video and audio equipment is typically part of a private investigator’s toolkit. These technologies allow for the evidence to be easily obtained, stored, and sent to clients. In addition, when it comes to using digital video surveillance, having a clear picture is critical. If the picture quality obscures the subject, it won’t be helpful. Ensure that your equipment will produce image quality that is not obstructed or blurry and test your audio equipment to ensure that the audio comes across as cleared and unmuffled. 

3. Other Types of Digital Evidence

For many personal detective services, surveilling a subject and his or her actions is part of the job. Since we are in the digital age, there are many tools that can aid in an investigation like GPS, drones, and surveillance over the web. The newer types of digital aids may be problematic and even illegal depending on the state. As private detective services, it is important to ensure the legality of using these aids in your state before engaging in potentially illegal activity.

When it comes to obtaining digital evidence on a subject’s computer, be aware that across the United States, there are laws that prohibit installing spyware on a subject’s computer. Even if your client volunteers to install it themselves, still be aware. It must be done by technological professionals and within the law.

4. Collecting Witness Statements

Eyewitness statements are often used to drive an investigation forward and to allow for the collection of more critical pieces of evidence at a later date. It must be collected within the legal confines of the law. Personal detective services cannot threaten, intimidate or coerce a potential witness and he or she must also abide by the consent laws within the state.

Final Thoughts

Whether it is a piece of physical evidence, interviewing a witness, or obtaining digital evidence, it is important to note the evidence obtained is done lawfully in a manner that is easily accessible and with proper documentation. Here at Forletta we ensure that all evidence we gather is lawful and admissible in court.