Display User Name

Summary:

Is there a way for an end user to determine their user name? We have to use a user name format that isn't intuitive (similar to empl ID) that some users may know, but others may not. One way I found is that a user can go into OTBI and look under 'My Account', and it will show the user name (user ID). Has anyone found other ways, maybe using personalizations, or even better, native ways out of the box?