The AT HOP card is an electronic fare payment card that was released in two versions on Auckland public transport services, beginning in May 2011. The smart card roll out was the first phase in the introduction of an integrated ticketing and fares system that was rolled out across the region.

Public transport in Auckland, the largest metropolitan area of New Zealand, consists of three modes: bus, train and ferry. Services are coordinated by Auckland Transport (AT) under the AT and AT Metro brands. Waitematā railway station is the main transport hub.