https://apnews.com/f1e997c322b14ad17cb353830072718b > NEW DELHI (AP) — As India enters an extended coronavirus lockdown, the government is actively pursuing contact tracing to help control infections. At the heart of the effort in the country of 1.3 billion people is a smartphone app that evaluates users’ infection risk based on location services such as Bluetooth and GPS. > In April, India launched the Aarogya Setu app, which helps people identify whether they have been near someone who tested positive for the virus. Since then, the app has been downloaded more than 90 million times in a country with a smartphone user base of about 500 million. To popularize it, a campaign featuring Bollywood celebrities was launched.