The Rabbit Card is Bangkok's premier contactless stored-value card, functioning similarly to London's Oyster or Hong Kong's Octopus card. To use it, you simply "tap and go" at the turnstiles of the BTS Skytrain, the MRT Yellow and Pink lines, and certain bus networks like the BRT. The system automatically calculates the fare based on your entry and exit points and deducts it from your balance. Beyond transit, the card is widely accepted as a payment method at major retail chains, including McDonald's, Burger King, Swensen's, and various food courts. You can top up your card at any BTS ticket office or authorized retailers like FamilyMart with a minimum of 100 Baht. One key 2026 requirement for tourists is that the first time you register or refill a new card, you must present your physical passport for identity verification. The card remains valid for seven years, making it a convenient tool for frequent visitors to Thailand's capital.