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Someone Somewhere · February 28th 17, 04:55 PM posted to uk.transport.london

On 28/02/2017 16:58, wrote:
In article , d () wrote:

On Tue, 28 Feb 2017 07:38:36 -0600
wrote:
In article ,
(Roland Perry) wrote:
No, because it has zero credit on it.

Oyster cards do have credit on them and will continue to have in 2018.
It's just, AIUI, where the information as to the amount of credit is held
that will change, from the card itself to the back office system.

With a consequent slowdown at the gates. Just what's needed in a busy
system. Contactless are already slower than Oyster, this won't improve
gate throughput at all.

Don't assume the gate processing won't get faster. Haven't you heard of
Moore's Law?

Moore's law has nothing to do with the speed of communications which
seems to be the limiting factor here - for Oyster the reader reads it,
calculated what needs to be applied and writes it, for Contactless it
reads it, and I believe checks with the back end before allowing it, or
if it doesn't the delay is to do with waking up the NFC chip and
carrying out the relevant authentication steps - again nothing to do
with Moore's law.