https://www.vox.com/recode/2020/9/1/21410291/apple-google-exposure-notification-express-coronavirus-covid-contact-tracing > Public health authorities won’t need to make their own apps in order to use Apple and Google’s exposure notification tool. > The Apple-Google exposure notification tool is getting a major upgrade. The two companies just announced the debut of Exposure Notifications Express, which will enable their exposure notification tool to work without a public health agency needing to build or maintain an app around it. Now, states or public health authorities that don’t have the resources or desire to build an app, but still want to take advantage of the tool, will be able to do so.