Private investigators can employ a wide variety of methods to help themselves gather the information needed for each case. While they are legally prohibited from wiretapping or monitoring phone conversations without consent from one or both individuals, they do have the authority to perform a legal search of all cell phone records through databases, networking, personal contacts, and surveillance techniques. They are also allowed to attach a hidden GPS tracker to their target’s vehicle or belongings, in order to more closely monitor their daily activity. A private investigator is specially trained to work within the law to investigate their target client, being both thorough and ethical.