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

BeenVerified Background Checks

BeenVerified Background Checks and Public Records Search

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This article provides a review of BeenVerified, the online people search, background check, and public records research service. In this review, I'll...
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...
Federal Regulatory agencies

Federal Regulatory Agencies of the United States Government

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What are Federal Regulatory Agencies? Federal regulatory agencies are the agency or government department that has responsibility for the...
best web hosting providers

List of the Best Web Hosting Providers

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This article provides an overview of the different types of website hosting and a list of the best web hosting providers. In...
Learn how Social Security Numbers are assigned

How Social Security Numbers are Assigned

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How Are Social Security Numbers Assigned? The purpose of this article is to help you understand how Social Security...
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...

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 investigation 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.

Find Someone Who is in Prison

How to Find Someone in Prison or Jail

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Starting Your Search If you need to find someone who is in prison, it is important to know exactly what type of facility they are incarcerated in. A prison, also known as a penitentiary...
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...
Police 10 Codes

List of Police 10 Codes

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What are Police 10 Codes? Police 10 Codes are signals used by police officers, law enforcement officials, and government agencies to talk in two-way radio communications. The codes are numbers that correspond to words,...

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,...
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...
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...

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.

Tile Item Tracker

Tile Bluetooth Tracking Device

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One of the coolest gadgets to emerge in recent months is the small Bluetooth tracking device. The most popular such item is the Tile item tracker. The device can be attached to almost anything and then tracked...
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...
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 to perform surveillance, which involves observing the behavior of...

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 Teams in the NFL

List of Teams in the National Football League (NFL)

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This article provides an overview of the National Football League (NFL) and provides a List of Teams in the NFL. The National Football League is the largest professional American football league in the world. From a legal...
List of Countries

List of Countries of the World

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A country is considered to be a geographical region. A country may be the territory of a sovereign state, the territory of a non-sovereign political division, or a region that is associated with a certain kind of...
Books of the Bible

List of Books of the Holy Bible: Old and New Testaments

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What are the Books of the Bible? Many people ask, "What are the books of the bible?" or "How many books are there in the Bible? That can be a difficult question to answer...

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 helpful sites related to ancestry, heritage, DNA and historical records. Plus, we’ll 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

Hunt A Killer Logo

Hunt A Killer Game – Solve a Murder Mystery

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Hunt A Killer: The Company Hunt A Killer is a company that seeks to change the entertainment industry by delivering interactive and immersive experiences....
United States Secret Service

United States Secret Service

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What is the Secret Service? The United States Secret Service (USSS) is a federal law enforcement agency headquartered in Washington, D.C. In addition, the...
terrorism investigations

Government Agencies Responsible for Terrorism Investigations

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This article provides an overview of terrorism and the United States Government Agencies that are responsible for conducting terrorism investigations. Terrorism has always been...

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 tracking the activity and location of a mobile phone or tablet. Most commonly, cell phone trackers are used by concerned parents. 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.