Hello and thank you for the question is the Bamboo Ink Smart Stylus USI Compliant. At this time, it is not certified with USI. However, the Bamboo Ink Smart Stylus works with non-Wacom based products for Windows, Android and IOS platforms. If you have any further questions I'd like to invite you to reach out to us on weekdays between 6 am and 6 pm PST to 855-MY-WACOM. Best