Samsung has launched an app that's designed to prevent vision damage when using phones or tablets for an extended duration of time. Called Safety Screen, the app uses facial recognition to detect the distance between a phone or tablet's display and a user's eyes, automatically shutting off the screen and alerting the users with a popup if it finds that the device is held too close.

Samsung Safety Screen app

Samsung says that the goal with Safety Screen is to prevent digital eye strain in children and teens, but the app can be used by anyone. The app runs in the background, allowing anyone to use their phone or tablet as they normally would. There's also a security feature that lets parents set up a username and password, which prevents kids from disabling the app. The app is now available for download from Google Play.