An app that young people use to share videos of themselves dancing might seem like a silly diversion, but it's become a powerhouse social media platform.

Countries around the world have struggled to get people to download and use contact tracing apps.

Smartphone apps and wearable devices can tell when workers have been within six feet of each other, promising to help curb the coronavirus. But they're not all the same when it comes to privacy.

Symptoms like loss of smell and taste are powerful predictors of COVID-19 infections.