Anyone who has been to a restaurant in the last few months might have scanned a square barcode with their phone to pull up their dinner menu or pay for their meals to limit contact with servers. Now ...

Lots of new app ideas are emerging to track Covid-19, but each has issues around privacy, location accuracy and how much appeal it will have to the public and to health officials. By Matt Richtel The ...

Bitter enemies teamed up to build tools they hoped would help slow the virus’s spread. If we’ve learned anything from covid-19, it’s the extent to which our lives are enmeshed with those of the people ...