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MediaDeviceInfo.deviceId

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The deviceId readonly property of the MediaDeviceInfo interface returns a DOMString 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.

Syntax

var deviceID = MediaDeviceInfo.deviceId

Value

A DOMString.

Specifications

Specification	Status	Comment
Media Capture and Streams The definition of 'deviceId' in that specification.	Candidate Recommendation	Initial definition.

Browser CompatibilityUpdate compatibility data on GitHub

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	55 55 For earlier versions, this interface is available through the adapter.js polyfill	12	39	No	? ? This interface is available in Opera through the adapter.js polyfill.	No

	Mobile
	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	55 55 For earlier versions, this interface is available through the adapter.js polyfill	55 55 For earlier versions, this interface is available through the adapter.js polyfill	Yes	39	? ? This interface is available in Opera through the adapter.js polyfill.	No	6.0

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https://developer.mozilla.org/en-US/docs/Web/API/MediaDeviceInfo/deviceId