https://www.vice.com/en_us/article/3az859/south-dakota-official-coronavirus-contact-tracing-app-limitations > One of the first official contact tracing apps from U.S. state Departments of Health doesn't reliably record location data, which it is supposed to do in order to help state governments monitor coronavirus infections and warn other residents if they may have been exposed to the virus. > This is not to say that app is not working as intended, but the news shows the potential limitations of contact tracing apps that are supposed to help track and contain the spread of coronavirus. The news comes after Motherboard found that another app from the United Nations didn't even function correctly at all.