Human Intelligence (HUMINT) is intelligence gathered by means of interpersonal contact,a category of intelligence derived from information collected and provided by human sources.
(NATO Glossary of Terms).
Collection includes clandestine acquisition of photography, documents, and other material; overt collection by personnel in diplomatic and consular posts; debriefing of foreign nationals and US citizens who travel abroad; and official contacts with foreign governments. (fFrom www.intelligence.gov)
Human Intelligence by Human Intelligence Collector Operations by