Overview
The Web USB API provides a way for non-standard USB devices (those that don't fall into common classes like keyboards or mice) to be used directly from the web without requiring specialized drivers.
How it Works
It allows the browser to claim a USB interface and perform low-level data transfers. Like Web Bluetooth, it requires a secure context and explicit user permission via a device picker.
Use Cases
- Updating firmware on microcontrollers (e.g., Arduino).
- Interacting with specialized industrial or scientific equipment.
- Web-based 3D printer controllers.