TY - JOUR AU - von Wyl, Viktor AU - Höglinger, Marc AU - Sieber, Chloé AU - Kaufmann, Marco AU - Moser, André AU - Serra-Burriel, Miquel AU - Ballouz, Tala AU - Menges, Dominik AU - Frei, Anja AU - Puhan, Milo Alan PY - 2021 DA - 2021/1/6 TI - Drivers of Acceptance of COVID-19 Proximity Tracing Apps in Switzerland: Panel Survey Analysis JO - JMIR Public Health Surveill SP - e25701 VL - 7 IS - 1 KW - COVID-19 KW - SARS-CoV-2 KW - digital proximity tracing KW - digital contact tracing KW - mHealth KW - tracing KW - compliance KW - acceptance KW - uptake KW - usability KW - communication AB - 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