TY - GEN AU - William Newhouse C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2019-07-01 04:07:00 DO - https://doi.org/10.6028/NIST.SP.1800-17 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2019 TI - Multifactor authentication for e-commerce: ER -