This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The MediaKeySystemAccess interface of the EncryptedMediaExtensions API provides access to a Key System for decryption and/or a content protection provider. You can request an instance of this object using the Navigator.requestMediaKeySystemAccess method.


MediaKeySystemAccess.keySystem Read only
Returns a DOMString identifying the key system being used.


Returns a Promise that resolves to a new MediaKeys object.
Returns a MediaKeySystemConfiguration object with the supported combination of configuration options.


Specification Status Comment
Encrypted Media Extensions
The definition of 'MediaKeySystemAccess' in that specification.
Working Draft Initial definition.

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 42.0 (Yes) ? ? ? ?
Feature Android Android Webview Edge Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support 43.0 (Yes) ? ? ? ? ? 42.0

Document Tags and Contributors

 Contributors to this page: libbymc, Sebastianz, jpmedley, kscarfone
 Last updated by: libbymc,