Payment through PayPass will cost the same as having paid on Oyster - including the discounted rates. From 2013 that's £1.40 for a single ride. However, unlike using an Oyster Card, there are no daily limits. Cash payments will cost £2.40 from 2013.
More top news
A senior employee at a 4-star London hotel has been jailed for six years for raping a man who he lured to a fake job interview.
Children's charity Kids Company is being investigated by the Metropolitan Police over criminal allegations.
The new list is the first to be published since the general election. Some of those identified owed money to a handful of workers.