Wis. Stat. § 968.10: Searches and seizures; when authorized.

A search of a person, object or place may be made and things may be seized when the search is made:

(1) Incident to a lawful arrest;

(2) With consent;

(3) Pursuant to a valid search warrant;

(4) With the authority and within the scope of a right of lawful inspection;

(5) Pursuant to a search during an authorized temporary questioning as provided in s. 968.25; or

(6) As otherwise authorized by law.