Browser fingerprint lab
Media devices
Without any permission a site learns how many microphones, cameras and speakers you have; after permission it also sees their names.
Running…
Result
Details
- Support
- Audio input
- Video input
- Audio output
- Device names visible
- getUserMedia / getDisplayMedia
What this means
On their own, device counts are not very distinctive; combined with other attributes they help. Names (such as "MacBook Pro Microphone") reveal more, which is why browsers only expose them once you have granted camera or microphone access. The permission request here is only used to re-read the list; nothing is recorded.