TY - GEN AU - Choong, Yee-Yin AU - Theofanos, Mary AU - Stanton, Brian AU - Hofmann, Patrick C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2009-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.IR.7645 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2009 TI - Symbols representing biometrics in use: ER -