3 More US States Launching Coronavirus Exposure Warning Apps

The Care19 mobile app, which the governors of North Dakota and South Dakota have asked residents to download to assist in contact tracing during the global outbreak of the COVID-19, is seen on a phone, on April 24, 2020. Paresh Dave/Reuters

OAKLAND, Calif.—North Dakota, Wyoming and Alabama are the latest U.S. states launching apps to warn users about potential exposure to the novel coronavirus by tracking their encounters, representatives for the states told Reuters on Thursday.

Virginia last week became the first U.S. state to urge residents to download such an app using technology developed by smartphone software giants Apple Inc and Alphabet Inc’s Google.