Justice Minister Judith Collins and the Justice Ministry are considering a law change to allow police to flag criminal backgrounds to family members and others.
Ms Collins said she would like to ensure police can provide information to people who might be concerned about the behaviour of someone they're in a close relationship with.
"For example, if you're living with someone, or going out with someone and you start to see some behaviour that made you concerned, you should be able to go to police and get the full details.
"I don't understand the idea that one day a matter is in court and it's public and public information, and it seems like a week later it's suddenly private.
"It seems bizarre to me, and I need to really be convinced that what we're doing at the moment is the right thing and I'm not sure that it is.''