Babbage: Track and trace

<p>Contact tracing is one of the tools being used against covid-19, but in the age of the smartphone, technology presents a new way to improve the process. Kenneth Cukier explores why contact-tracing apps have not yet delivered on their promise, how they can preserve privacy and what today’s decisions mean for the future of technology in society.&nbsp;&nbsp;</p><p><br></p><p>Please subscribe to The Economist for full access to print, digital and audio editions:</p><p><a href="http://www.economist.com/podcastoffer" rel="noopener noreferrer" target="_blank">www.economist.com/podcastoffer</a></p> &#10;&nbsp;<br /><hr><p style='color: grey; font - size: 0.75em; '>See <a style='color: grey; ' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for privacy and opt-out information.</p>