Exero Group, Professional Private Detectives
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    Surveillance

    Professional Surveillance Services in Prague and across the EU

    Mobile and static surveillance and activity verification by a licensed Czech private detective agency. Discreet, lawful and documented to evidential standards.

    Exero Group, Professional Surveillance Services in Prague and across the EU
    Surveillance

    Surveillance is the disciplined documentation of a person's observable activity in public space: where they go, what they do and who they meet, recorded so that each observation can be tied to a time and a place. Exero Group s.r.o. carries out surveillance and activity verification in Prague, across the Czech Republic and, where a matter requires it, elsewhere in the European Union, for law firms, businesses and private clients.

    Every deployment starts with a written lawful purpose, an operational plan and a proportionality assessment. Before an operative leaves the office we answer four questions in writing: who the subject is, what observable conduct will be documented, which legitimate interest justifies the intrusion, and what measures will limit incidental recording of uninvolved people. Observation takes place in public space only. We do not trespass, intercept communications, fit tracking devices or use databases reserved for the police.

    We deliver three kinds of work: mobile surveillance of subjects in motion, static observation of a defined location, and counter-surveillance to detect hostile coverage of executives, witnesses or legal teams. Each operation closes with a written report, a time-stamped and hashed media archive and an exhibit catalogue. Deployment timing depends on the brief, the location and team availability, and we confirm it in writing before work begins. What the findings mean for your matter remains a decision for you and your advisers.

    Core Capabilities

    Mobile Surveillance

    Multi-vehicle teams across CZ, SK, AT, DE, PL.

    Static Surveillance

    Discreet long-term observation from documented vantage points.

    Covert Foot Coverage

    Urban deployments with rotating operatives.

    Time-Stamped Reporting

    Daily logs, video index and exhibit catalogue.

    Cross-Border Operations

    Coordinated deployments with local partners abroad.

    Counter-Surveillance

    Detection of hostile surveillance against your team.

    Technical Methodology

    1. 1

      Briefing & Legal Basis

      We document the lawful purpose, scope and proportionality before any operative is deployed.

    2. 2

      Reconnaissance

      Vantage points, traffic patterns and likely subject behaviour are mapped in advance.

    3. 3

      Deployment

      Two or three operative teams maintain discreet coverage with rotating roles to avoid burn.

    4. 4

      Capture & Logging

      4K video and stills are time stamped; the observation log notes every change of position.

    5. 5

      Reporting

      Daily after-action notes and a final structured report with exhibits.

    Regional Context & Compliance

    Public-space rule

    Observation is conducted in public space only; no trespass, no concealed audio, no devices that intercept communications.

    GDPR balancing test

    Each engagement carries a written Article 6(1)(f) legitimate-interest assessment.

    Personality rights

    We respect §81-§90 of the Czech Civil Code and minimise capture of uninvolved third parties.

    Specific Use Cases

    Audience

    Private Clients

    Document observable conduct relevant to a family, matrimonial or personal matter.

    Audience

    Legal Counsel

    Build evidence packages for civil and family-court matters.

    Audience

    Risk Managers

    Document unauthorised activity by employees or contractors.

    Frequently Asked Questions

    It is the discreet observation and documentation of a subject in public space without alerting them, conducted under a documented lawful purpose by trained operatives of a licensed agency.

    A two-operative mobile team typically runs EUR 950-1,400 per operational day, including vehicles, equipment and post-day reporting.

    Yes, when conducted in public space by a licensed agency under a documented legitimate interest. Audio interception, trespass and use of police-only databases remain prohibited.

    When operations are properly resourced, no. Counter-counter-surveillance protocols and operative rotation are designed to keep coverage invisible.

    Raw video and stills are hashed and archived under chain-of-custody; working copies are used for redaction and reporting.

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    Learn more

    Talk to an Exero Group investigator. The first consultation is confidential and free of charge.