Search made by United States law enforcement personnel based on the consent of the individual whose person or property is being searched. No warrant or probable cause is required to perform a search if a person with the proper authority permits, approves, or agrees to a search. A consent search requires the individual whose person or property is being searched to freely and voluntarily waive his or her Fourth Amendment rights, granting the officer permission to perform the search. (https://www.bjs.gov/index.cfm?ty=tda)