User Impersonation
The DevStarter gives you a powerful way to debug those nasty user specific issues by impersonating a user
How to use User Impersonation Feature ?
move to the admin panel and select the users section.
select the user that you want to impersonate (make sure you have selected only one user), select the Impersonation option and click go
you would be redirected to the frontend site where you would be logged into the user and a blinker would be shown at bottom of the screen to remind you that you are inside the user’s account.
by default the auth token for impersonated user is set to 15 minutes for security reasons