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

The preventSilentAccess() method of the CredentialsContainer interface sets a flag that specifies whether automatic log in is allowed for future visits to the current origin, then returns an empty PromiseFor example, you might call this, after a user signs out of a website to ensure that he/she isn't automatically signed in on the next site visit. Mediation varies by origin, and is an added check point of browser stored credentials, informing a user of an account login status. This method is typically called after a user signs out of a website, ensuring this user's login information is not automatically passed on the next site visit.

Earlier versions of the spec called this method requireUserMediation(). See Browser compatibility for support details.


var Promise = CredentialsContainer.preventSilentAccess()




An empty Promise.


Specification Status Comment
Credential Management Level 1
The definition of 'preventSilentAccess()' in that specification.
Working Draft Initial definition.

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 51 ? ? 47 ?
Renamed from requireUserMediation() 60 ? ? 47 ?
Feature Android Webview Chrome for Android Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile
Basic support 51 51 ? ? ? 47 ?
Renamed from requireUserMediation() 60 60 ? ? ? 47 ?

Document Tags and Contributors

 Contributors to this page: jpmedley, bunnybooboo
 Last updated by: jpmedley,