On Jul 13, 1:10 pm, John B wrote:
...which, by then, they'd realised was the case. I'm not sure what the
"code 30" issue is, but it does mean that an unspecified number of
unfortunate types like yourself need a new physical Oyster card.

Looks like LUL have been disabling various Oyster cards. I wonder if a
load have been hacked to give free journeys and LUL were just
disabling any in a specific id range. I can't see any other reason why
they'd require people to get whole new cards since it should be fairly
easy to soft reset the ones they've got. No doubt we'll just get some
spin about "system problems" however and never hear any more about it.
Curious how this unique event has occured only a couple of weeks after
some hackers claim to have cracked the system.

B2003