mask.of.sanity writes "Shoddy customised cryptography by a state rail outfit has been busted by a group of Australian researchers who were able to replicate cards to get free rides. The flaws in the decades-old custom cryptographic scheme were busted using a few hundred dollars' worth of equipment. The unnamed transport outfit will hold its breath until a scheduled upgrade to see the holes fixed."
The opposite of a correct statement is a false statement. But the opposite
of a profound truth may well be another profound truth.
-- Niels Bohr