Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Symbols representing biometrics in use:



Yee-Yin Choong, Mary Theofanos, Brian Stanton, Patrick Hofmann
- NIST IR 7645
Report Number
NIST IR 7645


Choong, Y. , Theofanos, M. , Stanton, B. and Hofmann, P. (2009), Symbols representing biometrics in use:, , National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed April 15, 2024)
Created January 1, 2009, Updated May 20, 2023