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Old 02-05-2018, 02:56 PM   #3117
AnDyLe0
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Join Date: Apr 2006
Posts: 2,242
Yes, I know the mrt and bus reader is different.

what I mean is considering bus reader need to use wireless transmission to transmit the captured card detail back to Central server for processing and still less error compare to MRT in spite of people complaining it is harder to read in bus

I doubt they future proof their MRT reader with dual antenna even before the start of ABT

CEPAS, flash pay or credit card paywave use the same NFC frequency, hence don't need to have dual antenna

NFC use inductive coupling or something like a power transformer to transmit and receive data

In another word, if you can find their exact antenna location, tap there, you would have higher and faster rate of success read

If you read the FAQ again, your phone NFC antenna must align correctly with the card reader antenna.
for bus, is it every card needs to contact server? that would be very slow.
i thought there should be some offline processing.
the best spot to tap iphone for mrt is center area somewhere near the card logo, as discussed few days ago. i tried and confirmed it's somewhere there. but not sure whether this only applicable for readers in good condition.
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