"Tim Fardell" wrote in
message

On Fri, 12 Feb 2010, Mizter T wrote:

On Feb 12, 2:11 pm, Tim Fardell tim.fardell.all-your-
wrote:

On Fri, 12 Feb 2010, Recliner wrote:
[snip]
How do you know your Tube station exit wasn't picked up? The
on-line Web pages aften have gaps, but ticket machines will show
you the full history. So, even though the history shown online may
be incomplete, you won't necessarily have been overcharged.

Ah-ha! I think you're right - it's just that the 'Exit' events have
not shown up on the Web history. I spoke to the Oyster helpline,
and they said they can see that both journeys were completed
correctly and I have not been overcharged.

He's sending me a full statement to confirm it, but it certainly
sounds like the Web history is just missing the exit events.

At least I now know not to trust the journey history on the web.
Thanks :-)

How long ago was this?The online journey history does have a tendency
to lag somewhat.

One was last Saturday (6th Feb) and the other was way back on January
22nd.

The first one back in January I initially attributed to incompetence
on my part, but when it happened again at the same station I began to
smell a rat. Hence I've only just raised it. But it seems all is well
anyway.

I've found that the apparent gaps can stay indefinitely, but an event
such as topping up the card or reading it on a ticket machine sometimes
seems to correct the online history. It's almost as if the data is
sitting waiting in cache somewhere, but doesn't get written to the
online database until some event causes the cache to clear. But the
credit on the card always seems to be correct.