{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,3]],"date-time":"2026-04-03T15:05:14Z","timestamp":1775228714183,"version":"3.50.1"},"reference-count":63,"publisher":"Association for Computing Machinery (ACM)","issue":"3","license":[{"start":{"date-parts":[[2020,9,4]],"date-time":"2020-09-04T00:00:00Z","timestamp":1599177600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.acm.org\/publications\/policies\/copyright_policy#Background"}],"content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":["Proc. ACM Interact. Mob. Wearable Ubiquitous Technol."],"published-print":{"date-parts":[[2020,9,4]]},"abstract":"<jats:p>We present ScraTouch, an interaction technique using fingernails, as a new input modality by leveraging capacitive touch sensing. Differentiating between fingertip and fingernail touches requires only tens of milliseconds worth of shunt current data from unmodified capacitive touch surfaces, thus requires no hardware modification. ScraTouch is simple but practical technique for command invocation and mode switching. An evaluation using a point-and-select task on a touchpad showed that although the switching between the finger and nail in ScraTouch required a little more time compared with the baseline (finger touching without mode switching), in overall the operations, ScraTouch was just as fast as the baseline, and on average, 29 % faster than a long press with 500-ms threshold. We also confirmed that setting a simple threshold on the measured shunt current for recognition works robustly across users (97 % accuracy).<\/jats:p>","DOI":"10.1145\/3411831","type":"journal-article","created":{"date-parts":[[2020,9,4]],"date-time":"2020-09-04T21:39:45Z","timestamp":1599255585000},"page":"1-19","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":19,"title":["ScraTouch"],"prefix":"10.1145","volume":"4","author":[{"given":"Kaori","family":"Ikematsu","sequence":"first","affiliation":[{"name":"Yahoo Japan Corporation"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shota","family":"Yamanaka","sequence":"additional","affiliation":[{"name":"Yahoo Japan Corporation"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2020,9,4]]},"reference":[{"key":"e_1_2_2_1_1","first-page":"173","article-title":"Common nail changes and disorders in older people: Diagnosis and management","volume":"57","author":"Abdullah Lina","year":"2011","journal-title":"Canadian Family Physician"},{"key":"e_1_2_2_2_1","unstructured":"Apple. 2019. Force Touch. https:\/\/developer.apple.com\/macos\/force-touch\/  Apple. 2019. Force Touch. https:\/\/developer.apple.com\/macos\/force-touch\/"},{"key":"e_1_2_2_3_1","volume-title":"Proceedings of the 20th Annual Conference on Computer Graphics and Interactive Techniques (SIGGRAPH '93)","author":"Bier Eric A."},{"key":"e_1_2_2_4_1","doi-asserted-by":"publisher","DOI":"10.1145\/3338286.3344389"},{"key":"e_1_2_2_5_1","doi-asserted-by":"publisher","DOI":"10.1145\/2371574.2371582"},{"key":"e_1_2_2_6_1","doi-asserted-by":"publisher","DOI":"10.1145\/2207676.2208639"},{"key":"e_1_2_2_7_1","volume-title":"The impact of control-display gain on user performance in pointing tasks. Human-computer interaction 23, 3","author":"Casiez G\u00e9ry","year":"2008"},{"key":"e_1_2_2_8_1","doi-asserted-by":"publisher","DOI":"10.1145\/2501988.2502016"},{"key":"e_1_2_2_9_1","doi-asserted-by":"publisher","DOI":"10.1145\/2686612.2686699"},{"key":"e_1_2_2_10_1","doi-asserted-by":"publisher","DOI":"10.1145\/2702123.2702300"},{"key":"e_1_2_2_11_1","doi-asserted-by":"publisher","DOI":"10.1145\/3025453.3025924"},{"key":"e_1_2_2_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jml.2007.11.004"},{"key":"e_1_2_2_13_1","doi-asserted-by":"publisher","DOI":"10.1145\/3025453.3025486"},{"key":"e_1_2_2_14_1","volume-title":"Proceedings of the 2017 CHI Conference on Human Factors in Computing Systems (CHI '17)","author":"Grosse-Puppendahl Tobias"},{"key":"e_1_2_2_15_1","doi-asserted-by":"publisher","DOI":"10.1080\/00222895.1987.10735426"},{"key":"e_1_2_2_16_1","doi-asserted-by":"publisher","DOI":"10.1145\/1096737.1096742"},{"key":"e_1_2_2_17_1","doi-asserted-by":"publisher","DOI":"10.1145\/2817721.2817722"},{"key":"e_1_2_2_18_1","volume-title":"Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '14)","author":"Gutwin Carl"},{"key":"e_1_2_2_19_1","doi-asserted-by":"publisher","DOI":"10.1145\/2207676.2208730"},{"key":"e_1_2_2_20_1","volume-title":"Proceedings of the 21st Annual ACM Symposium on User Interface Software and Technology (UIST '08)","author":"Harrison Chris"},{"key":"e_1_2_2_21_1","volume-title":"Proceedings of the 24th Annual ACM Symposium on User Interface Software and Technology (UIST '11)","author":"Harrison Chris","year":"2047"},{"key":"e_1_2_2_22_1","volume-title":"Proceedings of the 24th annual ACM symposium on User interface software and technology (UIST '11)","author":"Harrison Chris","year":"2047"},{"key":"e_1_2_2_23_1","doi-asserted-by":"publisher","DOI":"10.1177\/154193120605000909"},{"key":"e_1_2_2_24_1","doi-asserted-by":"publisher","DOI":"10.1145\/2556288.2557234"},{"key":"e_1_2_2_25_1","doi-asserted-by":"publisher","DOI":"10.1145\/3010915.3010993"},{"key":"e_1_2_2_26_1","doi-asserted-by":"publisher","DOI":"10.1145\/2858036.2858095"},{"key":"e_1_2_2_27_1","doi-asserted-by":"publisher","DOI":"10.1145\/1866029.1866036"},{"key":"e_1_2_2_28_1","doi-asserted-by":"publisher","DOI":"10.1145\/1753326.1753413"},{"key":"e_1_2_2_29_1","doi-asserted-by":"publisher","DOI":"10.1145\/2702123.2702518"},{"key":"e_1_2_2_30_1","doi-asserted-by":"publisher","DOI":"10.1145\/2935334.2935358"},{"key":"e_1_2_2_31_1","doi-asserted-by":"publisher","DOI":"10.1145\/2935334.2935362"},{"key":"e_1_2_2_32_1","volume-title":"Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '14)","author":"Huang Da-Yuan"},{"key":"e_1_2_2_33_1","doi-asserted-by":"publisher","DOI":"10.1145\/3343055.3359717"},{"key":"e_1_2_2_34_1","unstructured":"Huawei. 2019. Knuckle screenshots. http:\/\/consumer.huawei.com\/minisite\/worldwide\/wheat-mate8\/faqs\/detail\/knuckle-screenshots.htm  Huawei. 2019. Knuckle screenshots. http:\/\/consumer.huawei.com\/minisite\/worldwide\/wheat-mate8\/faqs\/detail\/knuckle-screenshots.htm"},{"key":"e_1_2_2_35_1","doi-asserted-by":"publisher","DOI":"10.1145\/3267782.3274686"},{"key":"e_1_2_2_36_1","doi-asserted-by":"publisher","DOI":"10.1145\/3332165.3347903"},{"key":"e_1_2_2_37_1","doi-asserted-by":"publisher","DOI":"10.1145\/2699343.2699352"},{"key":"e_1_2_2_38_1","doi-asserted-by":"publisher","DOI":"10.1145\/3173574.3174095"},{"key":"e_1_2_2_39_1","volume-title":"Extended Abstracts of the 2020 CHI Conference on Human Factors in Computing Systems (CHI EA '20)","author":"Ikematsu Kaori"},{"key":"e_1_2_2_40_1","doi-asserted-by":"publisher","DOI":"10.1145\/2702123.2702572"},{"key":"e_1_2_2_41_1","doi-asserted-by":"publisher","DOI":"10.1145\/120782.120797"},{"key":"e_1_2_2_42_1","doi-asserted-by":"publisher","DOI":"10.1145\/3173574.3173934"},{"key":"e_1_2_2_43_1","doi-asserted-by":"publisher","DOI":"10.1145\/3301275.3302295"},{"key":"e_1_2_2_44_1","doi-asserted-by":"publisher","DOI":"10.1145\/3313831.3376778"},{"key":"e_1_2_2_45_1","volume-title":"2017 IEEE International Symposium on Electromagnetic Compatibility Signal\/Power Integrity (EMCSI). 791--796","author":"Li Y."},{"key":"e_1_2_2_46_1","doi-asserted-by":"publisher","DOI":"10.1145\/2807442.2807444"},{"key":"e_1_2_2_47_1","doi-asserted-by":"publisher","DOI":"10.1145\/3132272.3134126"},{"key":"e_1_2_2_48_1","doi-asserted-by":"publisher","DOI":"10.1145\/3098279.3098537"},{"key":"e_1_2_2_49_1","doi-asserted-by":"publisher","DOI":"10.1145\/3132272.3134130"},{"key":"e_1_2_2_50_1","doi-asserted-by":"publisher","DOI":"10.1145\/3240167.3240176"},{"key":"e_1_2_2_51_1","volume-title":"Proceedings of the 22nd Annual ACM Symposium on User Interface Software and Technology (UIST '09)","author":"David"},{"key":"e_1_2_2_52_1","first-page":"552","volume-title":"Psicothema, 2017","volume":"29","author":"Mena Blanca","year":"2017"},{"key":"e_1_2_2_53_1","volume-title":"Proceedings of the 2016 CHI Conference on Human Factors in Computing Systems (CHI '16)","author":"Oakley Ian"},{"key":"e_1_2_2_54_1","doi-asserted-by":"publisher","DOI":"10.1145\/3025453.3025567"},{"key":"e_1_2_2_55_1","volume-title":"Gesture in Embodied Communication and Human-Computer Interaction","author":"Pirhonen Antti"},{"key":"e_1_2_2_56_1","doi-asserted-by":"publisher","DOI":"10.1145\/1518701.1518933"},{"key":"e_1_2_2_57_1","doi-asserted-by":"publisher","DOI":"10.1145\/1518701.1518843"},{"key":"e_1_2_2_58_1","doi-asserted-by":"publisher","DOI":"10.1145\/3025453.3025663"},{"key":"e_1_2_2_59_1","doi-asserted-by":"publisher","DOI":"10.1145\/3025453.3025865"},{"key":"e_1_2_2_60_1","unstructured":"The Media Computing Group (RWTH Aachen University). 2011. MTDeviceDeclarations. http:\/\/hci.rwth-aachen.de\/guide_trackpad  The Media Computing Group (RWTH Aachen University). 2011. MTDeviceDeclarations. http:\/\/hci.rwth-aachen.de\/guide_trackpad"},{"key":"e_1_2_2_61_1","doi-asserted-by":"publisher","DOI":"10.1145\/3290605.3300254"},{"key":"e_1_2_2_62_1","doi-asserted-by":"publisher","DOI":"10.1145\/3351267"},{"key":"e_1_2_2_63_1","doi-asserted-by":"publisher","DOI":"10.1145\/2817721.2817737"}],"container-title":["Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/3411831","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/dl.acm.org\/doi\/pdf\/10.1145\/3411831","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,6,17]],"date-time":"2025-06-17T21:24:48Z","timestamp":1750195488000},"score":1,"resource":{"primary":{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/3411831"}},"subtitle":["Extending Interaction Technique Using Fingernail on Unmodified Capacitive Touch Surfaces"],"short-title":[],"issued":{"date-parts":[[2020,9,4]]},"references-count":63,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2020,9,4]]}},"alternative-id":["10.1145\/3411831"],"URL":"https:\/\/doi.org\/10.1145\/3411831","relation":{},"ISSN":["2474-9567"],"issn-type":[{"value":"2474-9567","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,9,4]]},"assertion":[{"value":"2020-09-04","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}