Years ago, before the current laws, in NSW if you had one licensed pistol there was no need to have a safe and your good lady wife could have access to the pistol.
If you got another pistol then you had to buy a safe; logical enough.
However if your wife decided to take up the sport and got a license and bought a pistol and there were now two pistols in the house , then a safe was required; OK fair enough.
But the safe had to have a lockable internal draw to house one of the pistols because the other licensed pistol holder wasn't allowed access to the other person's pistol even though they had access when they didn't have a license.

