Swimming pools, whilst fun, can obviously be a source of potential harm. NZ has laws preventing the unsafe installation of new pools, both from the actual installation process perspective and the surrounding areas.
New pools must be fenced in order to be able to limit access to those who shouldn’t be swimming alone.
This is an important part of a pool installation process that sometimes gets looked over.
There are many options but the most common would be a metal fence with a gate. The style of the fence means you don’t lose visibility of the pool whilst still protecting the most vulnerable.