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However, adopting contact tracing apps is not enough on its own, and much less is known about how people actually use these apps. Exploring app use can help us identify additional failures or risk points in the app life cycle. In this study, we conducted 13 semi-structured interviews with young adult users of Belgium's contact-tracing app, Coronalert. The interviews were conducted approximately a year after the onset of the COVID-19 pandemic. Our findings offer potential design directions for addressing issues identified in prior work - such as methods for maintaining long-term use and better integrating with the local health systems - and offer insight into existing design tensions such as the trade-off between maintaining users' privacy (by minimizing the personal data collected) and users' desire to have more information about an exposure incident. We distill from our results and the results of prior work a framework of people's decision points in contact-tracing app use that can serve to motivate careful design of future contact tracing technology.<\/jats:p>","DOI":"10.1145\/3570348","type":"journal-article","created":{"date-parts":[[2023,1,11]],"date-time":"2023-01-11T15:34:01Z","timestamp":1673451241000},"page":"1-26","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":7,"title":["Not Only for Contact Tracing"],"prefix":"10.1145","volume":"6","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5905-9838","authenticated-orcid":false,"given":"Oshrat","family":"Ayalon","sequence":"first","affiliation":[{"name":"Max Planck Institute for Software Systems, Saarbr\u00fccken, Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5301-4594","authenticated-orcid":false,"given":"Sophie","family":"Li","sequence":"additional","affiliation":[{"name":"Max Planck Institute for Software Systems, Saarbr\u00fccken, Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2005-9651","authenticated-orcid":false,"given":"Bart","family":"Preneel","sequence":"additional","affiliation":[{"name":"imec-COSIC, University of Leuven, Leuven, Belgium"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3930-8128","authenticated-orcid":false,"given":"Elissa M.","family":"Redmiles","sequence":"additional","affiliation":[{"name":"Max Planck Institute for Software Systems, Saarbr\u00fccken, Germany"}]}],"member":"320","published-online":{"date-parts":[[2023,1,11]]},"reference":[{"key":"e_1_2_1_1_1","doi-asserted-by":"publisher","DOI":"10.1109\/ICC.2018.8422886"},{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1145\/3432699"},{"key":"e_1_2_1_3_1","unstructured":"BBC. 2021. Less than half of Covid app downloads are active. https:\/\/www.bbc.com\/news\/uk-scotland-57715950. (Accessed on 30\/09\/2021)."},{"key":"e_1_2_1_4_1","doi-asserted-by":"publisher","DOI":"10.2196\/27882"},{"key":"e_1_2_1_5_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-030-85616-8_3"},{"key":"e_1_2_1_6_1","doi-asserted-by":"publisher","unstructured":"Cristina Bosco and Martina Cvajner. 2021. A qualitative analysis of users' attitudes towards the Italian contact tracing app. In CHItaly 2021:14th Biannual Conference of the Italian SIGCHI Chapter. ACM Bolzano Italy 1--5. https:\/\/doi.org\/10.1145\/3464385.3464732","DOI":"10.1145\/3464385.3464732"},{"key":"e_1_2_1_7_1","unstructured":"Daniela Bresic. 2021. The German corona-data-donation-app as an example of the concept of data donation. 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