Oyster Card

The Oyster Card is a payment system used for traveling on public transport in London, such as buses, subways, trams, trains, and even the ferry service. Here's how it works:

1. Purchase: You can buy an Oyster Card at subway stations, gift shops, and through the official Transport for London (TfL) website. It's also possible to use a virtual Oyster Card on smartphones with Apple Pay or Google Pay.

2. Topping up: After purchasing the card, you need to top it up with credit. You can do this at automatic machines, ticket offices, or online. You can choose to add a predefined amount or load a weekly or monthly pass.

3. Usage: When you enter and exit public transport, you must tap your Oyster Card on the reader both at the beginning and end of your journey. The cost of the journey will be automatically deducted from your credit. It's important to tap the card in both directions, otherwise you might be charged a maximum fare.

4. Discounts: The Oyster Card offers more advantageous fares compared to buying single tickets. Additionally, there are daily fare caps, which means you won't pay more than a certain amount for journeys made in one day.

5. Top-up and refund: You can top up your Oyster Card at any time. If you have a remaining balance and no longer intend to use the card, you can return it to get a refund of the remaining credit, through some TfL stations.

6. Checks: It's important to keep your card handy at all times, as there are regular checks to ensure passengers have paid their fare.

In summary, the Oyster Card is a convenient and economical way to get around London, simplifying public transport payments.