Who has used Navigator for i on my system?

After someone logs into Navigator for i their preferences are stored in the
IFS. IBM obfuscates the individual's directory name to reduce the number
of places you can easily get a list of users.
You can bypass this obfuscation with the following, which also tells you
who has logged into Navigator for i.
select PATH_NAME, OBJECT_OWNER, ACCESS_TIMESTAMP
from table (QSYS2.IFS_OBJECT_STATISTICS(
START_PATH_NAME *=>*
'/QIBM/UserData/OS400/Navigator/Preferences',
SUBTREE_DIRECTORIES *=>* 'NO'))
;
Yes, you can restrict this if you are among the "If it isn't green, it
isn't a screen" crowd.
Either totally with WRKFCNUSG FCNID(QIBM_NAV_ALL_FUNCTION)
or individual items with WRKFCNUSG FCNID(QIBM_NAV*)