Xianzhe Dong Xinyi He Tianlin Liang Dai Shi Dan Tao Entropy based Security Rating Evaluation Scheme for Pattern Lock. 1-2 2020 ICCE-TW https://doi.org/10.1109/ICCE-Taiwan49838.2020.9258176 conf/icce-tw/2020 db/conf/icce-tw/icce-tw2020.html#DongHLST20