Oyster and Visa Card on a London Underground Map - Stock image
Greater London, London - England, UK, Business Travel, Capital Cities
London, United Kingdom - August 13, 2013: The Oyster card is a credit card sized electronic payment system used on public transport throughout the city of London. The Visa Card is one method for paying for the credit on the Oyster Card. The London tube map represents the lines and stations of the London underground system.