Wisconsin All-Party

Licensing & Regulation

Wisconsin licenses PIs through the Department of Safety and Professional Services under Wis. Stat. §440.26. Applicants must be 18+, demonstrate experience or training, pass an examination, submit fingerprints, and post a surety bond.

Physical Surveillance

Public surveillance is permitted. Wisconsin's stalking statute (Wis. Stat. §940.32) constrains intrusive conduct. GPS tracking on a non-owned vehicle is risky.

Audio & Video Recording Consent

Wisconsin's statute Wis. Stat. §968.31 generally requires all-party consent for the interception of wire, electronic, and oral communications. However, the statute has been interpreted to allow one-party consent in some circumstances; the safer rule for PIs is to obtain all-party consent. The Wisconsin Supreme Court in State v. Duchow recognized a one-party-consent exception in certain contexts, but recent case law has tightened the rule.

Domestic, Marital & Infidelity Investigations

Wisconsin is a community-property state (one of only nine) and a no-fault divorce state. Marital misconduct rarely affects property division. PIs document patterns. Recording is constrained by the all-party-consent statute.

Cybersecurity, Hacking & Digital Investigations

Wis. Stat. §943.70 (computer crimes) parallels the CFAA. OSINT is permitted; pretexting is barred.

Missing Persons, Skip Tracing & Harassment

Wisconsin DOJ coordinates missing-persons cases. DPPA fully applies. Wis. Stat. §940.32 (stalking) is broad.