I/O device: A device that performs an information input/output function.

Import: The act of transferring data from one computer into its own system.

Intercom: A communication system that is generally installed in a building or institution by using a Private Branch eXchange (PBX).

Intrusion Alarm Zone: A zone set to emit a warning sound or relay signal if an unauthorized person attempts an intrusion after Arm. This zone normally begins monitoring after the day's work, and emits a preset alarm or signal when an intrusion attempt is detected.

ISO 19749-2: An international standard published by ISO that defines the fingerprint format information using the minutiae of fingerprints.