Apple, Google Boost Privacy Protections for Contact-Tracing Tool

Apple Inc. and Google said they are putting stronger privacy protections in their upcoming contact-tracing tool for Covid-19 and that an early version will launch for developers next week.

The companies said the system’s tracking keys -- a string of characters linked to a user’s device -- will be generated in more random ways, and that Bluetooth data will now be encrypted, making it more difficult for individuals to be identified by hackers. Apps using the tool will also now limit the recording of the time people are exposed to an infected person to a maximum of 30 minutes.

The ...