Always check support at runtime. Communicate clearly with your users. And test with real hardware on every OS you claim to support.
This modern web standard is revolutionizing how we interact with peripherals, allowing websites to communicate with serial devices (like Arduino, ESP32, or legacy hardware) directly via JavaScript. However, as with any cutting-edge web technology, the elephant in the room is browser compatibility. web serial api browser support
Remains unsupported due to Apple's security and privacy concerns. Chromium: The Gold Standard for Web Serial Always check support at runtime