For most tourists in Lisbon, the Navegante Occasional card (formerly known as Viva Viagem) used with the "Zapping" method is the best option. This is a green, rechargeable paper card that costs €0.50 to purchase. The "Zapping" feature allows you to pre-load a cash balance onto the card (between €3 and €40), and it automatically deducts a discounted fare for every trip you take across the Metro, Carris (buses/trams), CP (trains to Sintra/Cascais), and even the ferries. In 2026, Zapping remains popular because it provides the flexibility to jump between different transport companies without needing separate tickets. However, if you plan to visit many museums in a single day, the Lisboa Card might be better, as it includes unlimited transport plus free entry to major attractions like the Jerónimos Monastery. If you are staying for exactly 24 hours and plan to use the famous Tram 28 and the Santa Justa Lift multiple times, a 24-hour unlimited pass (approx. €6.80) is the most economical way to avoid the high "onboard" prices of individual tram tickets.