Surveillance is a core service offered by private investigators (PIs) where they monitor a subject's movements, activities, and interactions without their consent. 

Investigators use a variety of techniques and tools, including: 
• Physical Surveillance: In-person monitoring and following a subject. 
• Electronic Surveillance: Monitoring digital activities like emails, social media, and online behavior. 
• Photographic and Video Surveillance: Using cameras and drones to capture visual evidence. 
• GPS Tracking: Utilizing GPS devices to monitor a subject's location. 
• Undercover Operations: PIs may sometimes go undercover or use disguise to blend in and gather information. 

Surveillance services are used for diverse purposes: 
• Personal Investigations: To find missing persons, provide peace of mind in suspected cases of infidelity, or verify situations where trust is lacking. 
• Corporate Investigations: To protect company assets, monitor competitor activities, detect employee theft or fraud, and safeguard intellectual property. 
• Legal Investigations: To collect crucial evidence for civil disputes, custody battles, and to prove claims of harassment or stalking. 
• Insurance Investigations: To detect fraudulent insurance claims. 

The evidence gathered, such as photographs, video footage, and digital records, can be used to: 
• Provide irrefutable proof in court cases.
• Uncover hidden truths and provide clarity to clients.
• Support legal proceedings like divorce cases or restraint of trade disputes.