JMIR Publications

ABSTRACT

Background:

During the COVID-19 pandemic, one way to reduce further transmissions of SARS-CoV-2 is the wide-spread use of contact-tracing apps. Such apps keep track of proximity contacts and warn contacts of cases that were tested positive for an infection.

Objective:

We analyze potential barriers to the large-scale adoption of the official contact-tracing app that was introduced in Germany on June 16, 2020.

Methods:

Survey data were collected from 3,276 adults during the week the app was introduced using an offline-recruited probability-based online panel of the general adult population in Germany.

Results:

We estimate that 81.3% of the population aged 18-77 possess the devices and ability to install the official app and 34.9% are also willing install and use it. Potential spreaders show high access (91.8%) and ability (90.7%) but low willingness (31.0%) of app adoption, whereas for vulnerable groups the main barrier is access (62.4%).

Conclusions:

We recommend targeting information campaigns at groups with a high potential to spread the virus to decrease their data privacy concerns that may fuel their low willingness to adopt the app. In addition, vulnerable groups may be provided with equipment and support to overcome their barriers to app adoption.