"Since the changes were implemented, we have noticed a significant drop in the number of complaints we are receiving about the cards," Rawlings said.
At the end of last year, Auckland Transport decided to automatically reverse payments of online top-ups for unused cards to the credit or debit card used for the payment, the commission said.
That particular issue had previously sparked a number of complaints, the commission said.
The commission also reviewed the terms of use for Wellington's Snapper Services card and Canterbury's Metrocard.
Snapper has changed some of its clauses as a result and Metrocard's term and conditions are also being updated.