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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