A Quick Overview of Oyster Card
The Oyster card is a form of electronic ticketing used on public transport in Greater London in the United Kingdom.
It is promoted by Transport for London and is valid on travel modes across London including London Underground, London Buses, the Docklands Light Railway (DLR),London Overground, trams, some river boat services, and most National Rail services within the London fare zones.
A standard Oyster card is a blue credit-card-sized stored-value contactless smartcard that can hold single tickets, period tickets and travel permits, which must be added to the card before travel.
- Passengers touch it on an electronic reader when entering and leaving the transport system in order to validate it or deduct funds.
- Cards may be "topped-up" by recurring payment authority, by online purchase, at credit cardterminals or by cash, the last two methods at stations or ticket offices.
- The card is designed to reduce the number of transactions at ticket offices and the number of paper tickets.