Freeloaders on Auckland trains will find it tougher to evade paying when a new ticketing system is installed next year.
Auckland Transport communications manager Sharon Hunter said people would be able to use HOP tickets on trains by the middle of next year.
She said main train stations Britomart and Newmarket would be gated, "hence harder for people to pass through and exit without a valid ticket or HOP card".
Roving train staff would also be carrying hand-held devices with which to check that people had paid.
Prices had not been finalised for HOP train travel, but Hunter said at present a 10 per cent discount applied for people paying with HOP cards.