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eInvestigator.com is an online research resource for professional private investigators, detectives, police officers, process servers, security experts and anyone interested in using investigative search tools, websites, OSINT and databases to uncover information.

facebook search tools

Facebook Search Tools and Resources

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This article provides an overview of various Facebook Search Tools that can be used to investigate someone's account activity. First, I'll provide an overview...
private investigator research resources

Private Investigator Research Tools

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We compiled this list of private investigator research tools specifically for private investigators. However, the resources are useful for police officers, crime scene investigators,...
Background Check

Background Check Databases and Services for Investigators

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This article provides an overview of background checks and investigations and the companies that provide products and services. In addition, we'll cover the different...
Get a Private Investigator License

How To Get a Private Investigator License

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Learn How to Get a Private Investigator Licensing in any State This article provides an explanation of how to get a private investigator license in any...
List of the best email newsletters

List of the Best Email Newsletters

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This article provides a list of the best email newsletters. I decided to compile this list when I started doing research for my own...
surveillance equipment

Surveillance Equipment and Spy Gear for Investigations

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Surveillance equipment includes any equipment, gadget, or device that is used to conduct various types of surveillance, counter-surveillance, and investigations. The equipment is most often used...

Join the Private Investigator Directory and connect with potential clients who need investigative services all over the world. Promote your business services, your firm’s investigative expertise, drive traffic to your website and get more cases.

The Police and Law Enforcement section has a collection of helpful articles related to law enforcement work. Here, you can learn what it takes to become a police officer and where to get the training and education you need. Plus, learn about the equipment, weapons and vehicles used by officers in the line of duty.

Police officer duties

List of Police Officer Duties

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A police officer is a warranted employee of a police department, force, or military. Police officers are paid positions and are not appointed or elected to their post citizens. However, Police Chiefs and Commissioners may be elected by residents...
Lists of the most wanted criminals

List of Most Wanted Criminals, Fugitives, and Terrorists in the U.S.

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The FBI Ten Most Wanted List The FBI Ten Most Wanted Criminals list arose from a conversation held in late 1949, as J. Edgar Hoover, the Director of the United States Federal Bureau of Investigation and William Kinsey Hutchinson of...
Police Body Cameras

Police Body Cameras: Do They Reduce Complaints of Officer Misconduct?

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In today's technologically-savvy age of the smartphone, almost anyone can record and share live video footage of events in real-time. The question of on-duty police officers using body-mounted cameras to capture incidents as they unfold continues to be the...

Private investigators, law enforcement officers, and intelligence agents use a variety of computer software, online services, and mobile apps during the investigative process.

Private Investigator Software

Private Investigator Software

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Learn how to use Private Investigator Software and Online Services Technology plays a key role in any investigation business. Detectives use a combination of private investigator software such as online search tools, OSINT resources, computer software, and mobile apps to...
Cell phone tracker and Mobile phone spy software

Best Cell Phone Trackers and Mobile Phone Spy Software

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What is Mobile Phone Spy Software? Mobile Phone Spy Software is a hybrid software and monitoring service that is used to track caller activity on mobile devices, cell phones tablets, and computers. The software is designed to track devices owned by...
Case Management Software

Case Management Software

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This article provides an overview of legal case management and case management software. Case Management is the information management and workflow practices, procedures, and requirements used to manage legal cases, typically associated with the legal, health, and investigation fields....

Detectives in all industries use software programs like case management software, databases, productivity tools and more to help their agency operate more efficiently. In addition, professional detectives and intelligence agents use online services to conduct research, run background checks, and search public records databases, Then, the pull reports and analyze data to find missing persons and uncover the truth about people. Also, private eyes make heavy use of specialized applications (or apps) on their mobile devices to search for information on the go.

Some cases require the use of hi-tech surveillance equipment, sometimes referred to as spy gear. Sleuths and gumshoes who provide surveillance services need to be familiar with a wide range of electronic gadgets such as video cameras, binoculars and night vision goggles, audio listening devices, bugging and debugging equipment, drones and many more.

Dropcam wireless camera

Dropcam HD Wireless Remote Video Monitoring Camera

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Stream Live Video and View Anytime, From Anywhere Similar to a home alarm monitoring service, the Dropcam wireless camera is a cloud-based wireless video monitoring service that helps you stay connected to your home, family, baby, nanny, pets, and even your business. Simply connect...
Car Dashboard Mount Camera

iDrive Car Dashboard Mount Camera

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Car Dashboard Mount Camera In many situations, private investigators need a hands-free, car dashboard mount camera to use during surveillance missions. Dash mountable cams provide a simple solution for capturing video while you’re following a subject on the road, or if...
GPS Tracking Devices for Monitoring a Person's Location and Movement

GPS Tracking Devices

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What is GPS? GPS is an acronym for Global Positioning System, which is a system of satellites and receiving devices that compute positions on the Earth. Three people invented the technology for the United States Department of Defense: Ivan A....

Review the articles in our spy gear section to learn more about the types of suveillance tools and electronic equipment a private investigator might use to catch a cheating spouse, track down a missing person and gather information for a case.

If you’re a naturally curious snooper, you love information. Be sure to check out our extensive Lists of Lists category. You’ll find information such as a List of Social Networks (for social media checks), Lists of State Information, List of the best Search Engines for private eyes and more. The lists are for anyone who is interested in interesting facts and information, not just for those who are employed in professions related to the investigative industry.

List of the best email newsletters

List of the Best Email Newsletters

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This article provides a list of the best email newsletters. I decided to compile this list when I started doing research for my own email newsletter, The Digital Detective. I wanted to create a newsletter that people would actually...
List of Acronyms for Chatting and Texting

List of Acronyms for Chatting and Texting

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The worldwide web was officially invented in 1989, by Tim Berners-Lee, a British scientist working at CERN, the European Organization for Nuclear Research. I've been using the internet in one form or another since 1992 and I consider myself...
list of insurance companies in the united states

List of the Best Insurance Companies in the United States

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This article provides a list of insurance companies in the United States. The list includes organizations that provide full coverage solutions for your home, auto, health, life, and many other things. In addition, many of the companies on the...

Get a PI License

If you’re interested in becoming a private investigator, learn how to get a license with our state-by-state licensing guide. If you’re interested in pursuing an exciting career in the investigation industry, you’ll find everything you need to get started right here. Learn the state requirements, how to apply, how to join an association, where to get training and how to find more information.

Use our private investigator books to build your own library of reference and education materials about the industry. Our library includes an extensive selection if recommendations for how-to books, textbooks, reference manuals and magazines to help you learn new skills and techniques.

Training and Education

View our list of training and education resources. Whether you’re an experienced professional, or just getting started as an entry level associate, you’ll find a variety of investigation schools, academies, training classes, home study courses and distance learning programs. Learn the knowledge and skills you need to be private investigator and earn your degree, diploma or certificate. Educational resources include recommended books, study guides and exam preps.

A list of useful Open Source Intelligence (OSINT) tools and resources. Includes search tools to help you find public records, verify facts, search social media sites, reverse search images, uncover government data and more.

The United States Government has a wide variety of resources that are useful for private eyes. See our List of Government Agencies and U.S. Federal Regulatory Agencies.

Learn how to avoid becoming a victim of the latest fraud, scams and schemes. Learn what to look for, how to protect yourself and how to report crimes to the proper authorities.

As a private investigator, it’s important to keep in touch with what’s going on in the industry. Industry groups and associations regularly sponsor nationwide, regional and local conferences. The meetings and seminars are an excellent way to keep up with legislative changes that affect you. In addition, they are a great way to brush up on your skills, network with other private eyes and learn about new products and services. View a list of conferences.

We have a helpful collection of genealogy research resources for researching your family history, building a family tree, and tracking down your roots. We have links to research sites related to ancestry, heritage, DNA and historical records. Plus, we provide an overview of the best software and books and provide suggestions for looking up obituaries and how to find biographies. Visit the Genealogy section.

Search Public Records

Run an online public records people search and find out the real truth about anyone. Learn how to search online databases and OSINT websites to track down an old friend, reconnect with a lost love or find a missing person.

New and Updated Articles

Glossary of Investigation Terms

Glossary of Investigation Terms and Definitions

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This glossary of investigation terms is intended to help private investigators, police officers and everyday citizens understand the meaning of various terms used in investigation work. During the course of investigation...
U.S. Department of Homeland Security logo

United States Department of Homeland Security

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Overview of the Department The United States Department of Homeland Security (DHS) is a cabinet department of the United States federal government with the primary responsibilities of protecting the territory...
Binoculars and Night Vision Goggles

Binoculars and Night Vision Goggles for Surveillance

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This article provides an overview of binoculars and night vision goggles, sometimes abbreviated NVG, that can be used by private investigators for surveillance purposes. What are Binoculars? Binoculars, also known as...

We recommend that all private investigators join and participate in a local, state or nationwide investigation association for a number of reasons. First, associations are a great way to stay on top of what’s going on in the profession. Second, they often provide members with access to training and education opportunities. So, you can continue to sharpen your skills. Also, they are a great way to network with others and create a referral network. View the list of investigation associations for each state.

Popular crime TV series, police dramas and detective shows have inspired many people to pursue exciting careers as police officers and work as professional private detectives. Check out our List of the Top 50 Best Crime TV Series and Detective Shows. For example, we have overviews of classic shows like Simon & Simon, Columbo, Baretta, Hawaii 5-0 and many more. Honestly, Magnum has always been our favorite.

Mobile Spy Software is software for covertly tracking the activity and location of a mobile phone or tablet. Most commonly, cell phone trackers are used by parents to keep an eye on their children. However, there is growing use among employers and suspicious spouses. Read our reviews of the best solutions such as mSpy, FlexiSpy, Highster Mobile and others.

Police detectives and private investigators leverage crime scene investigation techniques and forensic science techniques, tools and equipment to investigate crime scenes. In addition, they are knowledgeable in collecting, transporting and preserving crime scene evidence, data and information. Also, PI’s leverage forensic labs to analyze fingerprints, examine DNA evidence and evaluate ballistics.

Learn how auditors, inspectors and examiners conduct official inquiries into financial matters. For example, our Financial Investigation section includes articles on Asset Search and Recovery, Credit Reports, Banking Information, Stock Market Research tools, books and more.