Details of how to copy the code of Oyster smartcards used on London's transport network can be published, a Dutch judge has ruled.
The ruling overturns an injunction to suppress the information won by the makers NXP.
The injunction was sought in June 2008 after Dutch researchers demonstrated how to copy cards and travel free on the London Underground, writes the BBC.
A spokesperson for Transport for London told the broadcaster "Transport for London remains confident in the security of the Oyster card system. Any fraudulent card would be identified within 24 hours of being used and blocked. Using a fraudulent card for free travel is subject to prosecution and we would seek to enforce this wherever possible."
The researchers plan to publish their research in October.
By staff writer
