In this Thursday, May 7, 2020 photo, an Indian man uses Aarogya Setu app on his mobile phone in New Delhi, India. As India enters an extended coronavirus lockdown, the government is fervently pursuing contact tracing to 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. (AP Photo/Altaf Qadri)
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