PIN Military Abbreviation

Personal Identification Number

A personal identification number is a numeric password shared between a user and a system that can be used to authenticate the user to the system. Typically, the user is required to provide a non-confidential user identifier or token (the user ID) and a confidential PIN to gain access to the system. Upon receiving the user ID and PIN, the system looks up the PIN based upon the user ID and compares the looked-up PIN with the received PIN. The user is granted access only when the number entered matches with the number stored in the system.

Personnel Increment Number

Personnel Item Number

Preliminary Imagery Nomination File

Production Identification Number

Particle Induced Noise

Plantidentification Number