{
  /*** [SECTION 2500]: HARDWARE FINGERPRINTING ***/
  /* 2502: disable Battery Status API
   * Initially a Linux issue (high precision readout) that was fixed.
   * However, it is still another metric for fingerprinting, used to raise entropy.
   * e.g. do you have a battery or not, current charging status, charge level, times remaining etc
   * [NOTE] From FF52+ Battery Status API is only available in chrome/privileged code [1]
   * [1] https://bugzilla.mozilla.org/1313580 ***/
  #  // user_pref("dom.battery.enabled", false);
  /* 2508: disable hardware acceleration to reduce graphics fingerprinting [SETUP-HARDEN]
   * [WARNING] Affects text rendering (fonts will look different), impacts video performance,
   * and parts of Quantum that utilize the GPU will also be affected as they are rolled out
   * [SETTING] General>Performance>Custom>Use hardware acceleration when available
   * [1] https://wiki.mozilla.org/Platform/GFX/HardwareAcceleration ***/
  #   // user_pref("gfx.direct2d.disabled", true); // [WINDOWS]
  #   // user_pref("layers.acceleration.disabled", true);
  /* 2517: disable Media Capabilities API [FF63+]
   * [WARNING] This *may* affect media performance if disabled, no one is sure
   * [1] https://github.com/WICG/media-capabilities
   * [2] https://wicg.github.io/media-capabilities/#security-privacy-considerations ***/
  #   // user_pref("media.media-capabilities.enabled", false);
  /* 2520: disable virtual reality devices
   * Optional protection depending on your connected devices
   * [1] https://developer.mozilla.org/docs/Web/API/WebVR_API ***/
  #   // user_pref("dom.vr.enabled", false);
  /* 2521: set a default permission for Virtual Reality (see 2520) [FF73+]
   * 0=always ask (default), 1=allow, 2=block
   * [SETTING] to add site exceptions: Ctrl+I>Permissions>Access Virtual Reality Devices
   * [SETTING] to manage site exceptions: Options>Privacy & Security>Permissions>Virtual Reality>Settings ***/
  #   // user_pref("permissions.default.xr", 2);
  /* 2522: disable/limit WebGL (Web Graphics Library)
   * [SETUP-WEB] When disabled, will break some websites. When enabled, provides high entropy,
   * especially with readPixels(). Some of the other entropy is lessened with RFP (see 4501)
   * [1] https://www.contextis.com/resources/blog/webgl-new-dimension-browser-exploitation/
   * [2] https://security.stackexchange.com/questions/13799/is-webgl-a-security-concern ***/
  "webgl.disabled" = true;
  "webgl.enable-webgl2" = false;
  "webgl.disable-fail-if-major-performance-caveat" = true;  # [DEFAULT: true FF86+]
}