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mediaMedia Devices API
successAvailable
microphoneMicrophone Permission
1Permission: Not granted
Allow Access
CameraCamera Permission
1Permission: Not granted
Allow Access
Media Devices
N/A
The MediaDevices API allows access to connected media input devices, such as cameras, microphones, and screen-sharing sources. It enables browsers to capture real-time media data from these devices, such as video and audio streams.
Permission Access Fingerprint
N/A

Authorized

inquiry

Denied

Unknown

What does a media device check reveal about my camera and microphone?
Without permission, only device types and counts — how many cameras, microphones, and speakers you have. It can't read device names, and it can't access any video or audio. Only after you explicitly grant access does it show specifics like deviceId and label.
Why is the device name blank, or a string of random characters?
That's the browser's protection mechanism. A device's label and deviceId come back empty, or as a fresh temporary value each time, until you grant permission — so a site can't build a lasting identifier without your consent. Once you grant access, the label becomes readable. In private browsing, the deviceId also changes every session.
Can device counts be used for fingerprinting?
Yes, but they don't separate you much. The combination of camera, microphone, and speaker counts provides some signal, but most ordinary machines share the same one-camera, one-mic, one-speaker setup. It works better as a supporting clue for cross-checking whether an environment's claims are consistent than as a way to pin down one person.