Businesses in the investigation activities category gather and analyse information for individuals, solicitors, insurers and organisations. Private investigators may conduct discreet enquiries into suspected fraud, theft, insurance claims, employee misconduct, relationship matters or missing persons. Work can include surveillance, tracing people, interviewing witnesses, checking publicly available records and carrying out background or due diligence research. Customers may receive a written report, photographs or other lawfully obtained evidence, together with a record of the enquiries made. Some investigators specialise in areas such as corporate investigations, intellectual property infringement, process serving or locating assets. Investigators do not have police powers, and their work must comply with laws on privacy, data protection, trespass and evidence gathering. The services offered and methods used vary according to the case and the information available.