The term 'private eye, for short' can be abbreviated in two ways: TEC (3 letters) and PI (2 letters). TEC stands for 'private investigator' and PI stands for 'private investigator'. Private investigators are individuals who are hired to investigate a person or situation. They often work on behalf of clients to uncover information that is not readily available to the public. They may also be hired to provide security services or to conduct surveillance. Private investigators typically have specialized training and experience in areas such as law enforcement, criminal justice, and computer forensics.