"Theoretically, police already have access to driver's licence photographs because, by law, you have to carry it when driving. Logic dictates police should have access through electronic means as well," he said.
"There's no point having this technology if you can't access photographs. It's incredibly frustrating," he said.
But Tolley said such a move would require going back to every driver in New Zealand to ask them to explicitly agree to waive their rights under the Privacy Act.
"It's a serious privacy issue and it would be an enormous step for New Zealanders to take. It would be almost moving towards a police state."
Privacy expert and barrister John Edwards said police access to driver's licence photographs would be "controversial" considering the recent privacy breaches in the public sector.
"The licence is there to demonstrate your authority to drive a vehicle on New Zealand roads. It shouldn't migrate into being a de-facto national ID card. We are in a time of declining trust of the Government's ability to respect the private data that they hold."
Meanwhile, Van Niekerk was sentenced this week on two counts of perverting the course of justice by giving false details to police.
Judge Lawrence Hinton sentenced Van Niekerk to 300 hours' community work and six months' community detention. He was convicted and discharged for the original drink-driving and speeding offences, which he pleaded guilty to earlier when appearing under the name Theo De Villiers.
The judge said Van Niekerk's offer to pay De Villiers $3000 for emotional harm had "tipped the balance" from home detention to the lesser punishment of community detention.
De Villiers said $3000 would only just cover his legal bills.