Asked whether the system was designed to maximise parking revenue by preventing motorists from giving away unexpired tickets, communications manager Sharon Hunter said the organisation was "all about giving more choice to the customer through innovation".
But people posting on the transport website www.aktnz.co.nz have bemoaned the loss of opportunity to perform random acts of kindness.
"I always thought giving your unused parking ticket to the next guy was a good solidarity builder amongst the community," said one person.
"It's a feel-good feeling when you give or receive free parking from a stranger - after all, the time has already been paid for and if you're leaving early, it seems fair."
Another said maximising revenue was obviously the purpose.
"Quite simply, it is motivated by greed," he said.
Ms Hunter denied that, saying Auckland Transport's aim was "to put the customer first".
"People might have to look around and find other random acts of kindness," she said.