User Objects

Certain objects, such as the Sloodle Toolbar, are 'user-centric'. This means that instead of educators authorizing them to access courses, individual users (including students) can authorize them for their own use, such as writing to their own Moodle blog.

You can see a list of all the objects authorized by a particular user by visiting that user's Sloodle Profile page (which also lists their avatar).

Lifetime

After a user authorises a user-object, they can continue to use it without having to re-authorise it. However, if it is not used for a set period of time, then it will expire, so they will need to re-authorise it. This is for security reasons, to reduce the risk of passwords being broken or stolen.
Lifetime should be at least 1 day