@Article{info:doi/10.2196/25701, author="von Wyl, Viktor and H{\"o}glinger, Marc and Sieber, Chlo{\'e} and Kaufmann, Marco and Moser, Andr{\'e} and Serra-Burriel, Miquel and Ballouz, Tala and Menges, Dominik and Frei, Anja and Puhan, Milo Alan", title="Drivers of Acceptance of COVID-19 Proximity Tracing Apps in Switzerland: Panel Survey Analysis", journal="JMIR Public Health Surveill", year="2021", month="Jan", day="6", volume="7", number="1", pages="e25701", keywords="COVID-19; SARS-CoV-2; digital proximity tracing; digital contact tracing; mHealth; tracing; compliance; acceptance; uptake; usability; communication", abstract="Background: Digital proximity tracing apps have been released to mitigate the transmission of SARS-CoV-2, the virus known to cause COVID-19. However, it remains unclear how the acceptance and uptake of these apps can be improved. Objective: This study aimed to investigate the coverage of the SwissCovid app and the reasons for its nonuse in Switzerland during a period of increasing incidence of COVID-19 cases. Methods: We collected data between September 28 and October 8, 2020, via a nationwide online panel survey (COVID-19 Social Monitor, N=1511). We examined sociodemographic and behavioral factors associated with app use by using multivariable logistic regression, whereas reasons for app nonuse were analyzed descriptively. Results: Overall, 46.5{\%} (703/1511) of the survey participants reported they used the SwissCovid app, which was an increase from 43.9{\%} (662/1508) reported in the previous study wave conducted in July 2020. A higher monthly household income (ie, income >CHF 10,000 or >US {\$}11,000 vs income ≤CHF 6000 or