MediaDeviceInfo: deviceId property

The deviceId readonly property of the MediaDeviceInfo interface returns a string that is an identifier for the represented device and is persisted across sessions.

It is un-guessable by other applications, and unique to the origin of the calling application. It is reset when the user clears cookies. For private browsing, a different identifier is used that is not persisted across sessions.


A string.


Media Capture and Streams
# dom-mediadeviceinfo-deviceid

Browser compatibility

BCD tables only load in the browser