The controversial child sex offender register has been live for a day, but there are already concerns about how stretched police numbers will check-up on offenders.
The register gives police and Corrections a central source of information to share with other government agencies, at their discretion.
Nelson lawyer Steve Zindel held an information session for local lawyers yesterday, to ensure they're up to speed on new court procedures for the register.
He said the biggest topic was the extra burden this is going to place on police and Corrections staff to ensure offenders are reporting dutifully.
"If there's changes of address or travel details, [or] if a person leaves their house for more than two days, notifications is meant to be given to Police, so that's going to be quite onerous on people and I can guarantee you people are going to forget or not do that on occasions."