Two-Thumbs-Up: Physical protection for PIN entry secure against recording attacks

Published in Comput. Secur., 2018

Recommended citation: DaeHun Nyang, Hyoungshick Kim, Woojoo Lee, Sung{-}bae Kang, Geumhwan Cho, Mun{-}Kyu Lee, David Mohaisen, "Two-Thumbs-Up: Physical protection for PIN entry secure against recording attacks." Comput. Secur., 2018. https://doi.org/10.1016/j.cose.2018.05.012