France is launching an official software application, or app, aimed at containing new outbreaks of the novel coronavirus. The app’s main purpose is the method of documenting infected people and the people they come into contact with, also known as contact tracing. As lockdown restrictions slowly ease, France is becoming the first major European country to deploy the smartphone technology while experts debate privacy concerns. The French were able to download the StopCovid app on their Google Android devices and Apple iPhones starting on June 2. That is the same day they were once again permitted to go to restaurants, parks, beaches, museums, and monuments. Neighbors including Britain, Germany, Italy, and Switzerland are developing their own apps. But they are using different technical protocols, raising questions about how well these programs will work across Europe’s borders.