Increasing violence against police could result in officers being kitted out in full-body armour.
Police headquarters has confirmed it is considering full-body protection for frontline staff, as the number of assaults on officers continues to rise.
They have yet to determine exactly what sort of armour would be used but The Dominion Post reported that the possibilities ranged from extra protection for arms and legs to an all-over suit - similar in appearance to that in the film Robocop.
The number of assaults against police increased to 2248 last year, the equivalent of one in four officers being assaulted. In 2006, there were 2123 assaults on police.
Of the 2007 incidents, 88 involved a weapon, including a gun or knife.
Police began a $10.4 million programme last year, to provide stab-proof vests to every frontline officer. There were delays because of size and heat problems.
Police said discussions about new armour were at an early stage.
Any upgraded protection would be reserved for police called to deal with disorder incidents.
The Police Association said it had not heard of the proposal.