Surveillance is one of the most recognized — and most misunderstood — tools in a private investigator's toolkit. Movies and TV shows often portray it as a lone detective in a trench coat snapping photos from a dark alley. The reality is far more methodical, technical, and legally precise.

Here's what professional surveillance actually looks like, and why it matters for your case.

What Is Surveillance Investigation?

Surveillance investigation is the systematic observation of a person, location, or activity to gather factual information. It is used in a wide range of cases including:

• Suspected infidelity or domestic disputes
• Insurance fraud investigations
• Workers' compensation fraud
• Child custody disputes
• Corporate misconduct
• Missing persons cases

The goal is always the same: to document the truth through direct observation and recorded evidence.

Types of Surveillance

Stationary Surveillance

Also called a "fixed post," this involves an investigator monitoring a specific location — a home, office, or vehicle — from a stationary position. This is common when a subject is expected to be at a known location.

Mobile Surveillance

Mobile surveillance involves following a subject as they move through their daily activities. This requires skill, patience, and multiple investigators in some cases to avoid detection. It is commonly used in infidelity, fraud, and custody cases.

Electronic Surveillance

With proper legal authorization, investigators may use GPS tracking devices on vehicles, monitor publicly available social media activity, or conduct digital open-source intelligence (OSINT) research. All electronic methods must comply with state and federal law.

Covert Video and Photography

Investigators use high-resolution cameras and video equipment to document behavior in public spaces. This footage can be critical evidence in court proceedings.

What Makes Surveillance Evidence Admissible?

For surveillance evidence to hold up in court, it must be:

• Legally obtained — conducted in public spaces or with proper authorization
• Properly documented — with timestamps, GPS data, and chain-of-custody records
• Conducted by a licensed investigator — who can testify to the authenticity of the evidence

This is why hiring a licensed PI matters. Evidence gathered by an unlicensed individual may be thrown out entirely, regardless of what it shows.

What Investigators Cannot Do

Even the most experienced investigators operate within strict legal boundaries. Surveillance does not include:

• Trespassing on private property
• Recording conversations without consent (where required by law)
• Hacking into devices or accounts
• Impersonating law enforcement

Any investigator who offers to cross these lines is putting you and your case at serious legal risk.

How Long Does Surveillance Take?

The duration of a surveillance operation depends entirely on the case. Some investigations yield results in a single day. Others require multiple sessions over several weeks. Your investigator should give you a realistic assessment based on the specifics of your situation.

Factors that affect timeline include:

• Subject's daily routine and predictability
• Geographic area and traffic patterns
• Complexity of the case
• Number of investigators deployed

What You'll Receive at the End

A professional surveillance investigation concludes with a detailed written report and supporting media — photographs, video footage, and a timeline of observed activity. This documentation is formatted to be used in legal proceedings if necessary.

At Valdes Investigation Group, every surveillance case is handled by experienced, licensed investigators using professional-grade equipment. We deliver clear, factual reports that stand up to scrutiny.

Ready to Get Answers?

If you need surveillance conducted on a personal or professional matter, contact Valdes Investigation Group for a confidential consultation. We'll explain exactly what's possible and how we can help.