{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,21]],"date-time":"2026-05-21T10:56:09Z","timestamp":1779360969781,"version":"3.51.4"},"publisher-location":"New York, NY, USA","reference-count":69,"publisher":"ACM","license":[{"start":{"date-parts":[[2021,5,6]],"date-time":"2021-05-06T00:00:00Z","timestamp":1620259200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.acm.org\/publications\/policies\/copyright_policy#Background"}],"funder":[{"name":"Natural Science Foundation of China","award":["No. 61521002, No. 61572276"],"award-info":[{"award-number":["No. 61521002, No. 61572276"]}]},{"name":"National Key R&D Program of China","award":["No. 2019AAA0105200"],"award-info":[{"award-number":["No. 2019AAA0105200"]}]}],"content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2021,5,6]]},"DOI":"10.1145\/3411764.3445624","type":"proceedings-article","created":{"date-parts":[[2021,5,8]],"date-time":"2021-05-08T03:50:37Z","timestamp":1620445837000},"page":"1-16","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":21,"title":["Auth+Track: Enabling Authentication Free Interaction on Smartphone by Continuous User Tracking"],"prefix":"10.1145","author":[{"given":"Chen","family":"Liang","sequence":"first","affiliation":[{"name":"Department of Computer Science and Technology Tsinghua University, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chun","family":"Yu","sequence":"additional","affiliation":[{"name":"Department of Computer science and Technology Tsinghua University, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaoying","family":"Wei","sequence":"additional","affiliation":[{"name":"Department of Computer Science and Technology Tsinghua University, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xuhai","family":"Xu","sequence":"additional","affiliation":[{"name":"Information School University of Washington, United States"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yongquan","family":"Hu","sequence":"additional","affiliation":[{"name":"Tsinghua University, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuntao","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Computer Science and Technology Tsinghua University, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuanchun","family":"Shi","sequence":"additional","affiliation":[{"name":"Department of Computer science and Technology Tsinghua University, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2021,5,7]]},"reference":[{"key":"e_1_3_2_2_1_1","doi-asserted-by":"publisher","DOI":"10.1145\/3269206.3272034"},{"key":"e_1_3_2_2_2_1","doi-asserted-by":"publisher","DOI":"10.1109\/CVPRW.2006.149"},{"key":"e_1_3_2_2_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.sysarc.2014.01.006"},{"key":"e_1_3_2_2_4_1","unstructured":"G. Bradski. 2000. The OpenCV Library.  G. Bradski. 2000. The OpenCV Library."},{"key":"e_1_3_2_2_5_1","doi-asserted-by":"publisher","DOI":"10.1145\/2858036.2858164"},{"key":"e_1_3_2_2_6_1","doi-asserted-by":"publisher","DOI":"10.1109\/CVPR.2017.143"},{"key":"e_1_3_2_2_7_1","doi-asserted-by":"publisher","DOI":"10.1145\/2807442.2807450"},{"key":"e_1_3_2_2_8_1","doi-asserted-by":"publisher","DOI":"10.1145\/2702123.2702464"},{"key":"e_1_3_2_2_9_1","doi-asserted-by":"publisher","DOI":"10.1145\/2642918.2647392"},{"key":"e_1_3_2_2_10_1","doi-asserted-by":"publisher","DOI":"10.1145\/2470654.2481424"},{"key":"e_1_3_2_2_11_1","doi-asserted-by":"publisher","DOI":"10.1145\/2468356.2479514"},{"key":"e_1_3_2_2_12_1","doi-asserted-by":"publisher","DOI":"10.1145\/2638728.2641721"},{"key":"e_1_3_2_2_13_1","doi-asserted-by":"publisher","DOI":"10.1145\/1966913.1966945"},{"key":"e_1_3_2_2_14_1","unstructured":"Matthieu Courbariaux Yoshua Bengio and Jean-Pierre David. 2014. Training deep neural networks with low precision multiplications. arxiv:1412.7024\u00a0[cs.LG]  Matthieu Courbariaux Yoshua Bengio and Jean-Pierre David. 2014. Training deep neural networks with low precision multiplications. arxiv:1412.7024\u00a0[cs.LG]"},{"key":"e_1_3_2_2_15_1","doi-asserted-by":"publisher","DOI":"10.1145\/2702123.2702141"},{"key":"e_1_3_2_2_16_1","unstructured":"Tim Dettmers. 2015. 8-Bit Approximations for Parallelism in Deep Learning. arxiv:1511.04561\u00a0[cs.NE]  Tim Dettmers. 2015. 8-Bit Approximations for Parallelism in Deep Learning. arxiv:1511.04561\u00a0[cs.NE]"},{"key":"e_1_3_2_2_17_1","unstructured":"github.com. 2020. PoseNet on TensorFlow Lite. https:\/\/github.com\/tensorflow\/tfjs-models\/tree\/master\/posenet  github.com. 2020. PoseNet on TensorFlow Lite. https:\/\/github.com\/tensorflow\/tfjs-models\/tree\/master\/posenet"},{"key":"e_1_3_2_2_18_1","doi-asserted-by":"publisher","DOI":"10.1145\/2470654.2481386"},{"key":"e_1_3_2_2_19_1","doi-asserted-by":"publisher","DOI":"10.1145\/3314023"},{"key":"e_1_3_2_2_20_1","unstructured":"Google. 2014. Google I\/O Keynote. https:\/\/www.youtube.com\/watch?time_continue= 1659&v=biSpvXBGpE0.  Google. 2014. Google I\/O Keynote. https:\/\/www.youtube.com\/watch?time_continue= 1659&v=biSpvXBGpE0."},{"key":"e_1_3_2_2_21_1","doi-asserted-by":"publisher","DOI":"10.1145\/2858036.2858267"},{"key":"e_1_3_2_2_22_1","doi-asserted-by":"publisher","DOI":"10.1145\/2858036.2858273"},{"key":"e_1_3_2_2_23_1","volume-title":"10th Symposium On Usable Privacy and Security (SOUPS 2014","author":"Harbach Marian","year":"2014","unstructured":"Marian Harbach , Emanuel von Zezschwitz , Andreas Fichtner , Alexander\u00a0De Luca , and Matthew Smith . 2014 . It\u2019s a Hard Lock Life: A Field Study of Smartphone (Un)Locking Behavior and Risk Perception . In 10th Symposium On Usable Privacy and Security (SOUPS 2014 ). USENIX Association, Menlo Park, CA, 213\u2013230. https:\/\/www.usenix.org\/conference\/soups 2014\/proceedings\/presentation\/harbach Marian Harbach, Emanuel von Zezschwitz, Andreas Fichtner, Alexander\u00a0De Luca, and Matthew Smith. 2014. It\u2019s a Hard Lock Life: A Field Study of Smartphone (Un)Locking Behavior and Risk Perception. In 10th Symposium On Usable Privacy and Security (SOUPS 2014). USENIX Association, Menlo Park, CA, 213\u2013230. https:\/\/www.usenix.org\/conference\/soups2014\/proceedings\/presentation\/harbach"},{"key":"e_1_3_2_2_24_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0166-4115(08)62386-9"},{"key":"e_1_3_2_2_25_1","doi-asserted-by":"publisher","DOI":"10.1145\/3161189"},{"key":"e_1_3_2_2_26_1","doi-asserted-by":"publisher","DOI":"10.1145\/2501604.2501607"},{"key":"e_1_3_2_2_27_1","doi-asserted-by":"publisher","DOI":"10.1145\/2335356.2335359"},{"key":"e_1_3_2_2_28_1","doi-asserted-by":"publisher","DOI":"10.1109\/ICCV.2015.123"},{"key":"e_1_3_2_2_29_1","doi-asserted-by":"publisher","DOI":"10.1145\/2858036.2858095"},{"key":"e_1_3_2_2_30_1","doi-asserted-by":"publisher","DOI":"10.1145\/2638728.2641697"},{"key":"e_1_3_2_2_31_1","doi-asserted-by":"crossref","unstructured":"Andrew Howard Mark Sandler Grace Chu Liang-Chieh Chen Bo Chen Mingxing Tan Weijun Wang Yukun Zhu Ruoming Pang Vijay Vasudevan Quoc\u00a0V. Le and Hartwig Adam. 2019. Searching for MobileNetV3. arxiv:1905.02244\u00a0[cs.CV]  Andrew Howard Mark Sandler Grace Chu Liang-Chieh Chen Bo Chen Mingxing Tan Weijun Wang Yukun Zhu Ruoming Pang Vijay Vasudevan Quoc\u00a0V. Le and Hartwig Adam. 2019. Searching for MobileNetV3. arxiv:1905.02244\u00a0[cs.CV]","DOI":"10.1109\/ICCV.2019.00140"},{"key":"e_1_3_2_2_32_1","doi-asserted-by":"publisher","DOI":"10.1109\/BTAS.2012.6374552"},{"key":"e_1_3_2_2_33_1","doi-asserted-by":"publisher","DOI":"10.1007\/11555261_48"},{"key":"e_1_3_2_2_34_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.patcog.2009.08.016"},{"key":"e_1_3_2_2_35_1","doi-asserted-by":"publisher","DOI":"10.1145\/3078861.3078870"},{"key":"e_1_3_2_2_36_1","unstructured":"Fudong Li Nathan Clarke Maria Papadaki and Paul Dowland. 2011. Behaviour profiling for transparent authentication for mobile devices.  Fudong Li Nathan Clarke Maria Papadaki and Paul Dowland. 2011. Behaviour profiling for transparent authentication for mobile devices."},{"key":"e_1_3_2_2_37_1","doi-asserted-by":"publisher","DOI":"10.1145\/2957265.2961857"},{"key":"e_1_3_2_2_38_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-319-10602-1_48"},{"key":"e_1_3_2_2_39_1","doi-asserted-by":"publisher","DOI":"10.1109\/BTAS.2016.7791155"},{"key":"e_1_3_2_2_40_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jisa.2017.10.002"},{"key":"e_1_3_2_2_41_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.pmcj.2016.06.017Mobile"},{"key":"e_1_3_2_2_42_1","volume-title":"Universal Access in Human-Computer Interaction. Access to Today\u2019s Technologies","author":"Mayron M.","unstructured":"Liam\u00a0 M. Mayron . 2015. Behavioral Biometrics for Universal Access and Authentication . In Universal Access in Human-Computer Interaction. Access to Today\u2019s Technologies , Margherita Antona and Constantine Stephanidis (Eds.). Springer International Publishing , Cham , 330\u2013339. Liam\u00a0M. Mayron. 2015. Behavioral Biometrics for Universal Access and Authentication. In Universal Access in Human-Computer Interaction. Access to Today\u2019s Technologies, Margherita Antona and Constantine Stephanidis (Eds.). Springer International Publishing, Cham, 330\u2013339."},{"key":"e_1_3_2_2_43_1","volume-title":"Universal Access in Human-Computer Interaction. Design Methods, Tools, and Interaction Techniques for eInclusion","author":"Mayron M.","unstructured":"Liam\u00a0 M. Mayron , Yasser Hausawi , and Gisela\u00a0Susanne Bahr . 2013. Secure , Usable Biometric Authentication Systems . In Universal Access in Human-Computer Interaction. Design Methods, Tools, and Interaction Techniques for eInclusion , Constantine Stephanidis and Margherita Antona (Eds.). Springer Berlin Heidelberg, Berlin , Heidelberg , 195\u2013204. Liam\u00a0M. Mayron, Yasser Hausawi, and Gisela\u00a0Susanne Bahr. 2013. Secure, Usable Biometric Authentication Systems. In Universal Access in Human-Computer Interaction. Design Methods, Tools, and Interaction Techniques for eInclusion, Constantine Stephanidis and Margherita Antona (Eds.). Springer Berlin Heidelberg, Berlin, Heidelberg, 195\u2013204."},{"key":"e_1_3_2_2_44_1","doi-asserted-by":"publisher","DOI":"10.1145\/3379503.3403544"},{"key":"e_1_3_2_2_45_1","doi-asserted-by":"publisher","DOI":"10.1145\/2702123.2702185"},{"key":"e_1_3_2_2_46_1","doi-asserted-by":"publisher","DOI":"10.1145\/2470654.2470701"},{"key":"e_1_3_2_2_47_1","doi-asserted-by":"publisher","DOI":"10.1109\/TIFS.2010.2075927"},{"key":"e_1_3_2_2_48_1","doi-asserted-by":"publisher","DOI":"10.1109\/CHASE.2017.107"},{"key":"e_1_3_2_2_49_1","doi-asserted-by":"publisher","DOI":"10.1145\/2815585.2815722"},{"key":"e_1_3_2_2_50_1","doi-asserted-by":"publisher","DOI":"10.1109\/MSP.2016.2555335"},{"key":"e_1_3_2_2_51_1","doi-asserted-by":"publisher","DOI":"10.1109\/MSP.2016.2555335"},{"key":"e_1_3_2_2_52_1","doi-asserted-by":"publisher","DOI":"10.1145\/3290605.3300393"},{"key":"e_1_3_2_2_53_1","volume-title":"Proceedings of the 21st USENIX Conference on Security Symposium","author":"Riva Oriana","year":"2012","unstructured":"Oriana Riva , Chuan Qin , Karin Strauss , and Dimitrios Lymberopoulos . 2012 . Progressive Authentication: Deciding when to Authenticate on Mobile Phones . In Proceedings of the 21st USENIX Conference on Security Symposium ( Bellevue, WA) (Security\u201912). USENIX Association, Berkeley, CA, USA, 15\u201315. http:\/\/dl.acm.org\/citation.cfm?id=2362793.2362808 Oriana Riva, Chuan Qin, Karin Strauss, and Dimitrios Lymberopoulos. 2012. Progressive Authentication: Deciding when to Authenticate on Mobile Phones. In Proceedings of the 21st USENIX Conference on Security Symposium (Bellevue, WA) (Security\u201912). USENIX Association, Berkeley, CA, USA, 15\u201315. http:\/\/dl.acm.org\/citation.cfm?id=2362793.2362808"},{"key":"e_1_3_2_2_54_1","doi-asserted-by":"publisher","DOI":"10.1109\/BTAS.2015.7358748"},{"key":"e_1_3_2_2_55_1","doi-asserted-by":"publisher","DOI":"10.1049\/ic:20000468"},{"key":"e_1_3_2_2_56_1","doi-asserted-by":"publisher","DOI":"10.1145\/2702123.2702179"},{"key":"e_1_3_2_2_57_1","doi-asserted-by":"publisher","DOI":"10.1109\/JIOT.2016.2579198"},{"key":"e_1_3_2_2_58_1","doi-asserted-by":"publisher","DOI":"10.1145\/2639189.2639218"},{"key":"e_1_3_2_2_59_1","doi-asserted-by":"publisher","DOI":"10.1145\/2493190.2493231"},{"key":"e_1_3_2_2_60_1","doi-asserted-by":"publisher","DOI":"10.1145\/3411764.3445484"},{"key":"e_1_3_2_2_61_1","doi-asserted-by":"publisher","DOI":"10.1145\/3290605.3300381"},{"key":"e_1_3_2_2_62_1","doi-asserted-by":"publisher","DOI":"10.1145\/3229434.3229449"},{"key":"e_1_3_2_2_63_1","doi-asserted-by":"publisher","DOI":"10.1145\/3411764.3445182"},{"key":"e_1_3_2_2_64_1","doi-asserted-by":"publisher","DOI":"10.1145\/3313831.3376836"},{"key":"e_1_3_2_2_65_1","doi-asserted-by":"publisher","DOI":"10.1145\/3381011"},{"key":"e_1_3_2_2_66_1","doi-asserted-by":"publisher","DOI":"10.1145\/3313831.3376810"},{"key":"e_1_3_2_2_67_1","doi-asserted-by":"publisher","DOI":"10.1145\/2501988.2502049"},{"key":"e_1_3_2_2_68_1","doi-asserted-by":"publisher","DOI":"10.1145\/3290605.3300935"},{"key":"e_1_3_2_2_69_1","doi-asserted-by":"publisher","DOI":"10.1109\/WACV.2015.35"}],"event":{"name":"CHI '21: CHI Conference on Human Factors in Computing Systems","location":"Yokohama Japan","acronym":"CHI '21","sponsor":["SIGCHI ACM Special Interest Group on Computer-Human Interaction"]},"container-title":["Proceedings of the 2021 CHI Conference on Human Factors in Computing Systems"],"original-title":[],"link":[{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/3411764.3445624","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/dl.acm.org\/doi\/pdf\/10.1145\/3411764.3445624","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,6,17]],"date-time":"2025-06-17T21:28:38Z","timestamp":1750195718000},"score":1,"resource":{"primary":{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/3411764.3445624"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,5,6]]},"references-count":69,"alternative-id":["10.1145\/3411764.3445624","10.1145\/3411764"],"URL":"https:\/\/doi.org\/10.1145\/3411764.3445624","relation":{},"subject":[],"published":{"date-parts":[[2021,5,6]]},"assertion":[{"value":"2021-05-07","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}