Commuting in London will be even more stressful than usual this morning after problems with the Oyster card system over the weekend. It is believed that a computer glitch on Saturday disabled the card readers which are used at tube stations and on buses.
The problems lasted for five hours on Saturday between 5.30am and 10.30am, with many customers having their cards wiped and incurring fines. Commuters whose cards have stopped working can replace them at Underground ticket offices and overcharged customers will be refunded on Tuesday.
The Oyster smartcard system was introduced back in 2003 by erstwhile mayor of London Ken Livingstone. It allows 40 passengers per minute to pass through ticket gates as opposed to 15 with printed tickets. Saturday's glitch comes hot on the heels of the news that Dutch researchers have discovered how to copy the Mifare microchip used in the Oyster card.