Google looked at one of the oldest parts of the desktop experience — the mouse cursor — and decided Gemini could make it useful for more than clicking things. The result is Magic Pointer, which can understand whatever you highlight on a Googlebook and help you act on it. That sounds incredibly handy, but it also raises a pretty important privacy question: when exactly does what’s on your screen leave your laptop and head to Google’s cloud? Google has now explained where that line sits.

Speaking on Android Faithful, Alexander Kuscher, Google’s Senior Director of Product for Laptops and Tablets, broke down what happens behind the scenes when you use Magic Pointer.