What a private investigator can do: limits and activities allowed by law

What a private investigator can do: activities and legal limitations

Introduction

Many people wonder what a private investigator can do and what the actual powers of this professional figure are. The collective imagination often associates the private investigator with limitless investigative methods, but in reality, investigative activity is regulated by precise legal norms.

In Italy, the activity of a private investigator is mainly regulated by Article 134 of the Consolidated Law on Public Security and by Ministerial Decree 269/2010. These regulations establish which investigative activities are allowed and which are prohibited.

Understanding what a private investigator can legally do is essential to avoid misunderstandings and to rely on licensed professionals.

Who can perform private investigator activities

Before analyzing what a private investigator can do, it is important to clarify who can practice this profession.

Private investigative activity can be carried out exclusively by subjects authorized by the Prefecture pursuant to art.134 TULPS.

To obtain the license, it is necessary to have:

moral requirements of reliability
specific bachelor's degree
specific professional training
experience in the investigative field
an authorized organizational structure

Only authorized private investigators can carry out investigative activities on behalf of private clients or companies.

What can a private investigator do

A licensed private investigator can carry out various investigative activities aimed at protecting a right.

Among the main permitted activities are:

Surveillance and observation of people
collection of information on relevant behaviors
photographic and video documentation
verification of attendance and movements
investigative activities for companies
investigations on behalf of lawyers

The private investigator always operates based on a formal assignment given by the client.

Surveillance and investigative observation

Surveillance is one of the most commonly used investigative techniques by private investigators.

This activity consists of following a person to document their movements and behaviors.

Private investigator surveillance is legal when:

occurs in public or publicly accessible places
is carried out by authorized investigators or their employees reported to the Prefecture
is aimed at protecting a right

Surveillance is part of the dynamic observation activities provided for by the regulations on private investigations.

Surveillance and static observation

A private investigator can conduct surveillance and static observation activities.

This activity involves monitoring a specific location to document:

entries and exits
frequentations
schedules and habits

Static observation is often used in combination with dynamic observation to reconstruct the behaviors of the investigated subject.

Private investigations in the family sphere

One of the most frequent areas of investigative activity concerns investigations in the family sphere.

Among the most requested investigations are:

investigations for marital infidelity
verification of dangerous associations of the minor son
investigations into behaviors incompatible with child custody

These investigations are aimed at gathering evidence that can be used in separation or divorce proceedings.

Corporate investigations

A private investigator can carry out investigative activities on behalf of companies.

Corporate investigations primarily concern:

employee monitoring for false illness or injury
investigations on unfair competition
breach of contractual obligations

The collected evidence can be used in disciplinary proceedings or labor disputes.

Defensive investigations on behalf of the lawyer

Private investigators can also carry out investigative activities on behalf of a lawyer as part of defense investigations.

These activities are provided for by the code of criminal procedure and allow for the collection of useful elements for the defense of the client.

Defensive investigations may include:

Informal talks with people potentially informed about the facts
search for witnesses
investigative assessments
documentation of relevant behaviors

What a private investigator cannot do

It is equally important to clarify what a private investigator cannot do.

Activities such as are prohibited:

telephone interceptions
Unauthorized access to computer systems
intrusion into private homes
illegal installation of monitoring tools

A private investigator must always operate in compliance with the law and privacy regulations.

Are the pieces of evidence collected by the private investigator valid?

The evidence collected by a licensed private investigator can be used in court.

Among the most commonly used pieces of evidence are:

Investigative reports
photographs
video
investigator's testimony

Private investigations therefore represent an important tool for the protection of rights in court.

Why rely on a licensed private investigator

Relying on a licensed private investigator ensures that investigations are conducted in compliance with current regulations.

A professional investigator operates with:

prefectural license
legitimate investigative methodologies
collection of evidence admissible in court
respect for privacy

This is essential to prevent the collected evidence from being challenged.

Conclusions

Understanding what a private investigator can do helps distinguish between legitimate investigative activities and behaviors prohibited by law.

Italian regulations clearly establish that private investigations can only be conducted by authorized professionals and must always be aimed at protecting a right.

When conducted correctly, investigative activity is an effective tool for gathering evidence and documenting relevant behaviors in family, corporate, or judicial contexts.

FAQ

Can a private investigator follow someone?
Yes, a licensed private investigator can follow someone in public or publicly accessible places to document relevant behaviors.

Can a private investigator check someone's phone?
No. Accessing phones, communications, or computer systems without authorization constitutes a crime.

Can a private investigator take photographs?
Yes, a private investigator can take photographs or videos in public places when the activity is aimed at gathering evidence.

Are the private investigator's findings admissible in court?
Yes, investigative reports and documentation collected by licensed investigators can be used in legal proceedings.