Ticket machines for Auckland's new AT Hop service are being introduced across the train network today as the new ticketing system rolls out.

The machines will appear in West Auckland first and will be available elsewhere within a fortnight.

On board ticket sales are being phased out and passengers must now buy tickets before they board, Auckland Transport's chief operations officer Greg Edmonds said.

To begin with commuters will only be able to buy single trip tickets. From October 28, 10-trip tickets, day passes and monthly passes will be replaced by AT Hop. Other passes will be replaced by the HOP card over time.

Edmonds said commuter's tickets may be checked before they board, during their journey or at their destination.

"The progress we are undertaking in the public transport area with AT HOP is on a scale that has rarely been seen in Auckland," he said.

"We do ask for people's patience as this is a massive technological change and there are bound to be some minor technical implementation issues which we will work as fast as possible to fix, should they occur."  

Edmonds said Auckland Transport would have people on hand to help customers deal with the changes.

Auckland Transport last month scrapped a deal with electronic card supplier Snapper after it failed to meet deadlines to roll out a payment system incorporating trains, buses and ferries.

Auckland Transport instead created Hop cards which will eventually be able to be used across all public transport. The cards will come into effect on trains and ferries in the next two months and the old ones will be phased out permanently next year.

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- © Fairfax NZ News