Apropos the editorial “Tracing Aarogya Setu” (May 4), the concerns expressed are real and deserves to be noted by the authorities. Worldwide, leaders are empowering themselves by ramping up data collection, often at the cost of the privacy of citizens. In the absence of a law on data protection in India and by not making the Setu app open source, the whole thing might lead to some problems. Not long ago, the Union minister for road transport, while mandating the use of FASTags, had said that data collected at the toll gates will be used by the home ministry to