Apple is testing a feature that will let users scroll through Vision Pro apps using the headset’s eye-tracking capability, according to Bloomberg’s Mark Gurman.

Eye-based scrolling will apparently work across all of Apple’s built-in apps, and Gurman says the company is working on letting third-party developers use the feature, too. How it would actually function is a mystery, but I could see a system where you have to look at the edge of a page long enough to start scrolling, or focusing on a UI element, then looking above or below it to move a page.

You can do a version of eye-based scrolling with the Dwell Control accessibility feature, which lets you open menus or carry out actions by briefly resting your eyes on items in your view. To scroll, you can gaze at an icon until the page scrolls a set amount — it’s clunky, and I’d be surprised if what Apple is testing works the same way.