The rationale behind the current system is based around the census. The reason that's important is because the census sets the population positions across the country, and then those locations are used to define boundaries and they're also used for the representation reviews for local government. So local government needs to know exactly where people are, within plus or minus 10 percent, so that they can set the representation in their wards. Those wards have very fluid boundaries, so having confidence in those electoral rolls and the location of people is really critical to being able to do that.