Featured Articles

eInvestigator.com is an online research and education 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 data and information.

open source intelligence (OSINT) tools

Open Source Intelligence Tools (OSINT)

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What is Open Source Intelligence (OSINT)? Open Source Intelligence, often abbreviated as OSINT, is data and information that is collected legally from open and publicly...
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...
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 Numbers are assigned. In 2011, the Social...
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...
Search the White Pages

How to Search the White Pages to Find People

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Learn How to Search the White Pages and Find People This article explains how you can search the white pages for a phone number or...
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...

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 and blog posts 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 11 codes

Police Eleven Codes

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In addition to police ten codes, some law enforcement officers, police departments, and security forces create alternative coding systems to make their particular form of radio communication unique and private. While most agencies use 10 codes, some departments use police 11 codes to...
Police Drone

Police Drones In Law Enforcement

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What are Police Drones? Drones are unmanned aerial vehicles (UAVs), also known as unmanned aerial systems (UAS) that are remotely controlled by a user. Drones can be equipped with various pieces of equipment such as daytime video recorders, low visibility...
How to Report a Crime

How to Report a Crime

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This article explains how to report a crime to law enforcement or other government agency. It covers everything from reporting a crime in your local neighborhood, to informing the authorities of criminal behavior on the internet. How to Report a...

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.

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...
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...
Audio Amplifiers

Audio Surveillance Equipment

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Overview of Audio Surveillance Tools Audio surveillance equipment is used by intelligence agencies, law enforcement, and private investigators to monitor and record subjects in a variety of settings. Audio surveillance can be conducted from a distance using covert listening devices...

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 Social Media Networking sites

List of Social Media Networks

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Before we get to the list of Social Media Networks, let's define what they are. Social networking websites are websites that allow you to connect and interact with a network of other people through personal websites, weblogs, online chat,...
List of Languages Spoken in the World

List of Languages

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This article provides a list of languages spoken around the world. What is Language? Language refers to a system of human communication that involves a series of sounds made with the mouth. This is also known as speaking or verbal communication....
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 directly because the different books are...

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 of recommendations for how-to books, textbooks, reference manuals, audiobooks, true crime podcasts, 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

Facial recognition software

Facial Recognition Systems

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FBI's Facial Recognition System The Federal Bureau of Investigation (FBI) has a facial recognition system that searches more than 400 million photos of faces. The system includes images taken from...
List of Major League Baseball Teams

List of Major League Baseball (MLB) Teams

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This article provides a list of Major League Baseball teams along with a brief description of each team and a link to their official website.  There are a total of...
Nest Secure Alarm System

Nest Secure Alarm System Review

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The Company The Nest Secure Alarm System is a product developed and distributed by a company called Nest. Nest makes simple and thoughtful home automation products for the home. The...

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, these experts 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 firearm ballistics data.

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, reference books and more.