A privacy law specialist says there's no law against using tracking covert tracking devices to spy on someone.
A Lower Hutt man, who has name suppression, has pleaded guilty to breaching a suppression order after admitting planting a tracking device in his ex-wife's car.
A Wellington barrister and privacy consultant, John Edwards, says that if the woman hadn't already obtained a protection order, her ex-husband's actions might have been legal.
Mr Edwards says it's an area where the law hasn't kept up with technology. Surveillance technology was previously used only by law enforcement agencies, he says, and was highly regulated.
The Law Commission has recommended new legislation to deal with
the misuse of surveillance.