Ever heard of a functional eye-tracking device for $149? Neither had we. But thanks to a collaboration between Microsoft and Tobii, eye-tracking support will soon be available in Windows 10, and you’ll be able to have Tobii’s Eye Tracker 4c operate a PC keyboard and mouse with your eyes, effecctively reducing the price of these invaluable systems by thousands of dollars.

To enroll to test and give feedback, contact Microsoft’s Windows Insider Program.