breadcrumbs: For Developers > page_name: about-signin-internals title: about-signin-internals
## Overview
The “chrome://signin-internals” webpage is a special URL in chromium that displays a summary of all signin and authentication related information in Google Chrome. It is useful in the triage and pinpointing of errors that could potentially be authentication related.
### Summary
#### Information Displayed
**Chrome Version - The version, branch and channel of chrome** **Signin Status - Whether the user is signed in or not** **User Id - The id for the currently signed in user or none if not signed in.** **Sid/Lsid - The hash of the SID/LSID for this session.**
### Last Signin Details
#### Information Displayed
**Type - Is this a credential or a cookie jar/OAuth based login** **Time - The time stamp of the most recent login** **Last OnClientLogin Status/Time - The status and timestamp of the last credential based login attempt. ‘Successful’ if everything went right, an error message if something went wrong.** **Last OnOAuthLogin Status/Time - The status and timestamp of the last OAuth based login attempt. ‘Successful’ if everything went right, an error message if something went wrong.** **Last OnGetUserInfo Status/Time - The status and timestamp of the last attempt to fetch information about the currently authenticated user on a successful login. The user info is fetched immediately after a Client or OAuth login, so the timestamp should be close to one of the preceding values.**
#### Room for improvement
**Add ChromeOS specific information (Retail login, etc).**
### Token Details
For each service, displays the hash of the current token (or 0 if we don’t have a token), the time stamp of the last token fetch attempt, and the status of the last token fetch attempt. Currently the following services are tracked.
#### Services managed by TokenService
#### Services using OAuth2AccessTokenConsumer
#### Room for improvement