Report or utility to identify users who have not logged in to Oracle EBS?

Is there any standard report or utility available to identify users who have not logged in to Oracle EBS for a certain number of days, or who have never logged in?

Alternatively, are there any methods or processes you follow to achieve this? We have considered using the Signon Audit Users report and comparing the output to the same report run in the previous period. This is quite labour intensive and data could easily be missed; it also will not pick up the user who has not logged in to Oracle.

Thanks