Features that gngr will not support

Never ever

• Battery Status API.
• Geo Location
• Any Camera or Mic APIs
• Resource timing APIs

Needs more thought

These features are good to have sometimes, but have fingerprinting potential. They should surely be opt-in though.

• WebGL
• WebRTC
• Canvas

References

• http://blog.add0n.com/2016/03/23/html5-apis-fingerprint-users-how-to-prevent.html
• https://blog.lukaszolejnik.com/battery-status-readout-as-a-privacy-risk/
• https://www.browserleaks.com/