The Customs Service is introducing a new screening process for international air cargo.
The current system uses X-ray machines at buildings in Mangere and Christchurch
Customs says this system focuses too heavily on destination as a measure of risk.
The new process being brought in on Tuesday will instead be based on the types of cargo listed which Customs believes will result in fewer but better targeted inspections.
Under the new system, exporters have to lodge a consignment at least nine hours before take off or flights could be missed.
Customs is also considering the introduction of a tamper-indicating seal for air freight cargo.
The new system has been determined by the National Targeting Centre which coordinates intelligence that enables interceptions of high-risk people, goods, and craft crossing the border.