Originally Posted by kiwiNZ

NZ should already be able to accomodate global entry, my understanding is that it works using the same system where airlines capture a known traveller number (KTN) from a passenger who is registered for TSA PreCheck, which they transmit as part of your checkin. The ability to capture a KTN is what is required by airlines who offer TSA PreCheck, and the same KTN is what provides the ability to recognise those who are registered for Global Entry.