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London buses to offer contactless payment card option from tomorrow(12/12/12)
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December 18th 12, 11:21 AM posted to uk.transport.london
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London buses to offer contactless payment card option from tomorrow (12/12/12)
On Tue, 18 Dec 2012 12:08:05 +0000
Roland Perry wrote:
In message , at 10:37:27 on Tue, 18 Dec
2012,
d remarked:
The problem with doing it for every transaction is that the card is
allowed to be removed from the RF field *before* the terminal has even
started its validation sequence.
In which case the transaction fails. Whats the problem?
But the transaction doesn't fail - that's the normal mode of use.
Huh? So the money gets deducted before any validation is done? Who designed
this system, some nursery school children?
B2003
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