You can use an Oyster card, the electronic card available since 2003 that holds multiple travel passes or simply cash, which is deducted every time you touch in and out of the Tube and bus system. Practically every Londoner has one. Transport for London said that only 0.7% of all bus journeys were paid for with cash anymore. To make sure older or vulnerable people don't get lost, TfL has a "one more journey" feature for Oyster cardholders, which allows a single extra trip if you have insufficient credit. TfL said the move to cashless fares will save it $41 million a year.