Writing instruments have guided human expression for more than 2,000 years. Today, the active stylus bridges that legacy with our digital world, making it one of the most natural forms of human-computer interaction. USI ensures styluses work consistently across devices through a unified, open standard.
USI delivers what all users have come to expect from their devices - true interoperability.
Writing is one of humanity’s oldest interfaces. Long before keyboards and screens, people captured ideas with charcoal, ink, and graphite – simple tools that helped shape culture, education, business, and imagination. The stylus is the modern continuation of that legacy: a way of thinking with your hands, drawing connections, and expressing ideas naturally.
The Universal Stylus Initiative (USI) exists to ensure that digital ink is just as universal.
USI is an industry consortium that develops and maintains the open active stylus standard adopted across the computing ecosystem. By bringing together PC OEMs, silicon and IC vendors, software developers, accessory makers, and ecosystem partners, USI defines how a stylus and device communicate — from pressure and tilt sensing, to secure pairing, to programmable buttons.
We believe that something as intuitive and universal as writing deserves digital interoperability. Users should be able to pick up a stylus they love and trust that it works. Manufacturers should be able to innovate without being locked into proprietary solutions. Developers should be able to build once and reach millions of digital-ink–enabled devices.
