Apple’s iPhone 12 Pro and 12 Pro Max have a new feature for users who are blind or low vision — the ability to essentially see other people coming. The feature went live for iPhone and iPad users on Thursday with the launch of iOS 14.2.

The devices make use of the new lidar sensor on the back of the phones to detect how close other people are to the user, something Apple has named People Detection. Lidar is a type of depth sensor that helps with augmented reality apps and serves as the eyes of self-driving cars. Now, Apple is applying it to accessibility in an effort to help people who have vision problems better navigate the world around them.