In article , Richard M
Willis writes
That's the reason it's not being rolled-out so quickly onto NR: they
are waiting for OysterNextGen where the cards can be read at a distance of
several meters without a touch in/out and without the passenger knowing
they've been read. In this way, they can check for invalid routings if
wanted.

That's nonsense.

The power requirements to get back a readable signal from the card are
going to be enormous - it's something like inverse sixth power (I forget
why, but it was explained to me once).

And suppose you do that at a busy platform. How on earth is the system
going to discriminate between the 100 or so Oysters that respond?

--
Clive D.W. Feather | Home:
Tel: +44 20 8495 6138 (work) | Web: http://www.davros.org
Fax: +44 870 051 9937 | Work:
Please reply to the Reply-To address, which is:

In message , Clive D. W. Feather
writes
In article , Richard M
Willis writes
That's the reason it's not being rolled-out so quickly onto NR: they
are waiting for OysterNextGen where the cards can be read at a distance of
several meters without a touch in/out and without the passenger knowing
they've been read. In this way, they can check for invalid routings if
wanted.

That's nonsense.

The power requirements to get back a readable signal from the card are
going to be enormous - it's something like inverse sixth power (I
forget why, but it was explained to me once).

And suppose you do that at a busy platform. How on earth is the system
going to discriminate between the 100 or so Oysters that respond?

It would also have implications for people carrying but not *using*
their Oystercards, eg when I have a paper Travelcard and am not using
the Oyster PrePay in my pocket. I sometimes do this if I've travelled
to London on a train+Travelcard ticket or if using NR services within
London. I'm sure there are other reasons, too.
--
Ian Jelf, MITG
Birmingham, UK

Registered Blue Badge Tourist Guide for London and the Heart of England
http://www.bluebadge.demon.co.uk

Ian Jelf typed

It would also have implications for people carrying but not *using*
their Oystercards, eg when I have a paper Travelcard and am not using
the Oyster PrePay in my pocket. I sometimes do this if I've travelled
to London on a train+Travelcard ticket or if using NR services within
London. I'm sure there are other reasons, too.

Here's one.

I have a Disabled Person's Freedom Pass, with which I travel.

I keep a Prepay Oyster in my bag to lend to friends from out of town. I
don't want deductions from that Oyster *unless* someone else is using
it.

--
Helen D. Vecht:
Edgware.

Me
are waiting for OysterNextGen where the cards can be read at a distance
of
several meters without a touch in/out and without the passenger knowing
they've been read. In this way, they can check for invalid routings if
wanted.

CDWF That's nonsense.
No kidding.

The power requirements to get back a readable signal from the card are
going to be enormous - it's something like inverse sixth power (I forget
why, but it was explained to me once).

And suppose you do that at a busy platform. How on earth is the system
going to discriminate between the 100 or so Oysters that respond?

Think your sarcasm detector has had a bad day.

Richard [in SG19]



--
Posted via a free Usenet account from http://www.teranews.com