Some co-workers who attended Empower 2018 said they attended a session that was mentioning a new feature of 10.3 that allows a person to set an additional password on a repository item.  

In our situation, we have some users who share a single repository license.   They were thinking that the new password feature in 10.3 would allow another level of security if there was a reason why one of the users sharing the account should not access a particular file. 

I've been unable to find any info on this new feature and was wondering if it sounds familiar to anyone.