Police started trialling Chinese-made drones before first looking into how secure they were.
A six-month trial of DJI drones began in June 2019 but the Police Minister, Poto Williams has told Parliament, potential problems weren't identified until July.
The DJI drones have been banned by US federal agencies in 2017 over concerns about data gathered being hijacked and sent to third parties.
Phil Pennington reports.
