With years of experience and only hiring the top surveillance private investigators in our field, NAI specializes in obtaining the surveillance results you need to win your case. Our field investigators specialize in one thing: surveillance. They are here to provide our clients with a fresh, objective perspective and are prepared to handle a variety of surveillance services. With over 30+ agents in the tri-state area, our investigators are essentially chameleons, able to blend into any location or situation needed.

Surveillance Private Investigator

What is surveillance?


Surveillance is the art of monitoring a target or subjects activities through observation and close watch. It is observation of the behavior of people or objects. Typical subjects or targets are people, places, and vehicles.  Surveillance is conducted in a covert manner in which the subjects or targets are unaware they are being watched. The activities are documented with detailed reports, video, and pictures. Our agency has vast experience performing surveillance cases throughout the world in various situations, settings and difficulty.

Types of Surveillance:


One of the best reasons to hire a private investigator is his or her experience and skill in modern surveillance. Surveillance refers to a close observation of a person or group to monitor their activities to gather evidence and meet the objectives of the case. Surveillance is difficult and takes years of practical application in order to be effective. It is never recommended that someone other than licensed private investigators perform surveillance as most states have laws preventing it (stalking and Harassment).  Our private detective staff is licensed to engage in surveillance and have the techniques and experience necessary.

Physical Surveillance

Physical surveillance refers to physically watching the subject(s) or “having eyes on them” as a term used in the industry.  A private eye may utilize surveillance for a myriad of cases such as infidelity, cheating spouses, criminal, missing persons, and fraud to name a few.is conducted by male or female agents that are physically maintaining constant close watch of a subject usually by vehicle or foot… read more about Physical Surveillance

Electronic Surveillance

Electronic surveillance can be the first line of defense when trying to protect your home and family.  This can be a combination of video and audio electronic devices setup to provide you with peace of mind.  An example of electronic observation that is most commonly used in surveillance investigations is vehicle & GPS tracking.  … read more about Electronic Surveillance

We have all types of Private Investigators


No matter what type of surveillance you are looking to conduct, whether it’s surveillance in the workplace or on a city street, it’s important for surveillance investigators to blend in.  Different looks for investigators are needed depending upon the location. You wouldn’t want a muscle bound body guard tailing someone in a young college town – they simply don’t fit in. The same goes for when we are following individuals in Wall Street and corporate businesses. Each investigator NAI chooses for a case is chosen to blend into their surroundings to deliver optimum results. NAI hires former federal agents (narcotic agents, detectives, FBI, IRS) along with recent grads with experience, all who are trained to be chameleons and fit into the location necessary to conduct your investigation. This is one of the ways NAI is able to deliver the results you need. We are here to deliver the best results possible to our clients, and tailor each investigation based upon the clients individual needs.

Frequently Asked Questions:

  • Where Can N.A.I. Conduct Surveillance?

    North American Investigations, Inc. has extensive experience conducting surveillance throughout the world.  Over the last 40 years we have built a network of invaluable contacts, and affiliates all over the world. We are one of the oldest and largest agencies operating in New York, New Jersey, Connecticut, and California.

  • Will I Get Pictures Or Video?

    North American Investigations, Inc. will attempt to provide you with as much physical evidence as deemed possible by your individual case. North American Investigations, Inc. will make every effort possible to obtain video.

  • What If You Lose The Person You Are Following While On Surveillance?

    Even the most experienced surveillance agent can get into a situation where contact with the subject may be broken due to circumstances beyond our control. There may also be occasions where the surveillance agent will discontinue surveillance on the subject if the agent feels the subject is “hot” or “looking over their shoulder” to see if they are being followed. Our experienced surveillance agents will never try to compromise the integrity of your case. We can always resume at another time.

  • Can One Of My Family Members Or Friends Do The Surveillance?

    In most states, family members and/or friends can’t conduct surveillance or investigations without a private investigators license. There is also a chance that they could be arrested for stalking in some states as well.

  • I Previously Confronted My Partner And Accused Them Of Cheating. Can You Still Conduct Surveillance?

    We never advise a client to confront their partner with any ideas, intuition, or evidence until the proper evidence has been gathered to prove the case.  You should always contact an