Courts have wider powers to impose electronic monitoring under a bill that has been passed by Parliament.
They can now order monitoring for offenders as a special condition of release under sentences of less than two years, and impose them when sentencing an offender to intensive supervision.
The Bill was passed on Tuesday night and Corrections Minister Judith Collins says it improves public safety.
"This means people who were not previously able to be electronically monitored and were in the community without GPS monitoring will now be monitored," she said.
"Corrections will know where they are, and the community will be safer."