Professional  & Confidential

Surveillance Investigations



What Is Surveillance?
Surveillance is the close observation of a person, place, or object. It is the practice of watching a subject in order to document the interactions or whereabouts of the subject.

When Is Surveillance Used?

  • Missing person searches
  • Cheating spouse investigations
  • Recurrent theft
  • Worker's compensation cases
  • Vandalism
  • Fraud Investigations
  • Criminal Investigations
  • SIU Investigations


Common Types of Surveillance

There are a variety of ways to carry out surveillance, including the use of electronics, physical observation, conducting interviews, and using technology. 

Electronic Surveillance It involves utilizing devices like television, wiretapping, and radios to document activity. It also includes monitoring an individual’s use of their phones, email, and social media.

Physical Observation is when investigators physically follow or watch a subject. This can potentially involve disguises, stakeouts, and multiple investigators.

Interviews are conducted by investigators to discover as much information as possible about the subject. The people interviewed could include family members, neighbors, friends, or coworkers.

Technical Surveillance encompasses digital photography and video/audio recordings. Examples of these are surveillance cameras used by businesses and dash cameras used by both police officers and private investigators.

Surveillance Methods

Along with types of surveillance, there are different tactics used by investigators in order to obtain information.

Overt vs. Covert

An example of overt investigation includes the security cameras businesses use that deter clients from stealing. Covert investigation, however, is undetected, like an undercover detective trailing a subject

Mobile vs. Stationary

Mobile investigation involves detectives following their subjects, whether on foot or in a vehicle. Stationary investigation is remaining in one location, which could include watching the subject from a parked car.

Mechanical vs. Human

Mechanical investigation is the use of video cameras, voice recorders, and other such equipment. Human investigation is when a member of the investigative team is a direct source of information.

Why Conduct Surveillance?

There are a variety of reasons, from investigating crime to locating an individual, to conduct a surveillance investigation.

To prevent crime
To obtain evidence of a crime
To obtain evidence in civil suits
To document an individual's location
To document activities in/around a location
To obtain information for interrogation purposes
To obtain information to be used in court

With prevalent issues like marital infidelity, employee dishonesty, and crime, surveillance is one way you can stay secure. It gives you the facts and proof you need about the people you trust with your home, children, money, and your life.

How Surveillance Works


An investigator will get to know the client first, delving into their desires and expectations for the investigation. This determines the depth and means of the study.
The investigator will then conduct an extensive background check for the subject. Vital information includes the subject’s name, address, phone number, physical description, photograph, and local relatives. Their habits, hobbies, schedules, and coworkers are also important to note. Next, an investigator will familiarize themselves with the area where the investigation will be taking place, usually via maps and pictures. Being familiar with the location during both the day and night will result in a more effective investigation. An investigator will then decide on what equipment the particular case calls for and know how to most effectively use it. Some of this could be equipment specifically for investigators, like dash cameras or tinted windows, but also included are things as simple as a flashlight and a full tank of gas. Preparing a plan specific for the case is an important aspect for an investigator. This means developing a reasonable explanation for being in the area and adjusting car and clothes in order to fit in as much as possible. A investigator will then start investigating, keeping in mind common sense (like don’t let the subject make eye contact, don’t park conspicuously, and don’t walk by the house more than once). During their investigation, the investigator will also take extensive notes, including dates and times, in order to report to both client and court the most accurate information as possible.