Again, in Singapore, you can check your last 20 transaction or so using
your EZ Link card. There were two ways to do this:
1. At a machine in the station where you could also add more value to
your card.
2. On the website of the EZLink company.
#1 would suggest that the card stores a certain number of transactions,
but #2 suggests that centralized storage is also quite likely in this case.
My guess is that the system is probably not real-time but forwards the
transactions to the server at some designated time?
OK, this is from their website "*only the transaction of last 3
days(excluding today) and maximum of 20 transactions(latest) will be
displayed" - and true to their word, my transaction for this morning is
not included in the list. So, I guess, it updates the server at some
time, no sure when.
If you want to see where else the EZ Link Card is used in Singapore,
take a look at their website:
http://www.ezlink.com.sg/whereEzlinkUsed.htm
Cheers
mohit.
Colin Belton wrote:
>Martyn_Williams@idg.com wrote:
>
>
>
>>But turn that system real-time and you've got tracking. I'm sure JR could
>>easily do the same with Suica.
>>
>>
>>
>JR already does. I remember pressing the wrong button on one of the
>older Suica machines (the ones that also sell other types of cards) last
>year and getting a long list of all the stations I had entered and
>exited. The list also included train fares. I cannot remember which
>button I pressed and I do not know whether that button is still
>available. I will check next time I use a Suica machine. Anyway, it
>shows that JR is keeping records of people's movements.
>
>Colin Belton
>
>
>This mail was sent to address mohits@onghu.com
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Received on Tue Mar 1 04:38:15 2005