Comment by elondaits

4 years ago

If you get the MIDI device to act as a keyboard it’s not for typing things in the browser but in the OS... you are out of the sandbox so it’s possible to download and install any payload.

I don't understand what you mean. We're talking about a piano keyboard by the way, not a typing keyboard. The browser uses it via the MIDIAccess API, and simply sets up a callback for MIDI codes, such as noteOn, noteOff, etc. I have used it extensively.