八達通
Except for the Airport Express, MTR fares are slightly lower when using an Octopus card compared to using single journey tickets. For example, the cost of the three-minute journey from Admiralty to Tsim Sha Tsui across the Victoria Harbour was (as of January 2018) HK$9.7 using the Octopus card, compared with HK$10.5 for a single-journey ticket. Also, to have fare discounts and promotions, say Monthly Pass and MTR Club Bonus points Scheme, passengers are required to hold an Octopus Card.