The browser asks; the website does not silently turn on a camera
Modern browsers show a permission prompt when a page requests access to a camera. The prompt identifies the site, and the choice belongs to you. A page cannot grant itself access after you have blocked it; it must rely on your browser setting.
For a hand-controlled instrument, camera permission is requested because the tracker needs frames to recognize your hand. The request should be made when you choose to start the camera-based experience, not as a hidden background action.
Allow, block, and change your mind
Choose Allow when you want to use hand tracking on the current site. Choose Block when you do not want camera use. If you later change your mind, open the site controls near the address bar, update the Camera permission, and reload the page so the browser can make a new request.
Operating systems may also have a separate privacy control for the browser itself. If the site setting looks correct but no camera is available, check the device privacy settings for Chrome, Safari, Edge, or the browser you are using.
What Gesture Synth uses the camera for
Gesture Synth uses camera frames locally to estimate hand position and finger count. Those signals control chords and energy. The core feature does not upload, record, store, or transmit the live camera feed, and it requests video rather than microphone audio.
You can use keyboard mode instead if you prefer not to grant camera access. It gives you a way to play the same musical styles without video input.
A quick permission checklist
Use this checklist before troubleshooting tracking quality.
- Confirm the address bar shows the correct site before responding to a prompt.
- Allow the intended camera only when you want to use hand tracking.
- Close other apps that may be using the webcam.
- Use the browser site controls to revoke access when you are finished.