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In this paper, we present SwipeSense a technique for exploring the feasibility of directional swipe interactions on the back of devices, utilizing built-in inertial measurement unit (IMU) sensors and machine learning models. We conducted a user study with 12 participants who performed 9600 BoD swipes in 8 distinct directions while holding the device naturally. The results of our machine learning models indicate that various directional swipes on the back of the device can be accurately distinguished using only the built-in IMU sensors of the phone, achieving a range of model accuracy between 72% and 95%. Furthermore, we showcase potential applications for these gestures.<\/jats:p>","DOI":"10.1145\/3743734","type":"journal-article","created":{"date-parts":[[2025,9,9]],"date-time":"2025-09-09T14:28:48Z","timestamp":1757428128000},"page":"1-24","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["SwipeSense: Exploring the Feasibility of Back-of-Device Swipe Interaction Using Built-In IMU Sensors MHCI030"],"prefix":"10.1145","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2318-8144","authenticated-orcid":false,"given":"Neel","family":"Shah","sequence":"first","affiliation":[{"name":"Ontario Tech University","place":["Oshawa, Canada"]}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-6754-9874","authenticated-orcid":false,"given":"Benedict","family":"Leung","sequence":"additional","affiliation":[{"name":"Ontario Tech University","place":["Oshawa, Canada"]}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4104-0781","authenticated-orcid":false,"given":"Mariana","family":"Shimabukuro","sequence":"additional","affiliation":[{"name":"Ontario Tech University","place":["Oshawa, Canada"]}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0405-1169","authenticated-orcid":false,"given":"Ali","family":"Neshati","sequence":"additional","affiliation":[{"name":"Ontario Tech University","place":["Oshawa, Canada"]}]}],"member":"320","published-online":{"date-parts":[[2025,9,9]]},"reference":[{"key":"e_1_3_5_2_2","doi-asserted-by":"crossref","unstructured":"Chris Bevan and Dana\u00eb\u00a0Stanton Fraser. 2016. 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