>
>On 17 Sep, 04:05, Charles Ellson ellson.demon.co.uk> wrote:
>

>> On Tue, 16 Sep 2008 15:47:53 -0700 (PDT), Mizter T
>>
>> gmail.com> wrote:
>>

>>>On 16 Sep, 21:25, MIG doreenbird.co.uk> wrote:

>>

>>>> On Sep 16, 8:05 pm, Mizter T gmail.com> wrote:

>>

>>>>> On 16 Sep, 18:13, MIG doreenbird.co.uk> wrote:

>>

>>>> (snip)

>>

>>>>>> But can you still get travelcards from shops that aren't dated till
>>>>>> they've been through a barrier?  Presumably one could buy them any
>>>>>> time, but you'd need to come to an understanding about the date
>>>>>> stamped on it.

>>

>>>>> The point you're making isn't exactly clear to me.

>>

>>>> Well, if you wanted a travelcard to use the next day, it might work
>>>> barriers from when you first used it tomorrow (if that is how they
>>>> work) but if the shopkeeper stamped today's date on it, it wouldn't
>>>> pass a visual inspection on a bus tomorrow.

>>

>>>I thought that was the point you were making, but I wasn't entirely
>>>clear of that.

>>

>>>> To ask for it to be stamped with tomorrow's date would provide no
>>>> additional cheaty opportunities to what's always possible.

>>
>> You could use it on the Underground and on buses today in the hope
>> no-one looks at the date and then use it tomorrow only on buses (where
>> the magnetic stripe isn't going to be read?).
>>

>
>Or variations thereof. Yes, I have thought this through and reached
>similar conclusions - see my post upthread, though it may not be
>immediately obvious as I was purposefully using somewhat opaque
>language (though reading between the lines it quickly becomes
>transparent).
>
>As ever it's difficult to discuss the potential holes in ticketing
>without also flagging them up to those who might wish to take
>advantage.
>