Remember they current thinking is that the driver is too stupid to
know when he's in a station so the computer has to ok the door opening
using GPS. If it doesn't then they won't. I'm waiting for the first
hacker to hang around some major station with a GPS jammer to see what
happens.

B2003

How on earth can GPS be used at St Pancras LL or for that matter City
Thameslink.

You need to have a clear view of the sky - I would also have though
Farringdon (or any other station with a roof) would have been difficult.,

On Mar 18, 5:27*pm, "Paul Rigg" wrote:

How on earth can GPS be used at St Pancras LL or for that matter City
Thameslink.

You need to have a clear view of the sky - I would also have though
Farringdon (or any other station with a roof) would have been difficult.,

Quite. This is why SN 377s still take a silly amount of time to open
the doors in the low-level platforms at Victoria (and why they took a /
really/ silly amount of time before whatever solution they currently
follow was added).

--
John Band
john at johnband dot org
www.johnband.org

On Mar 18, 5:40*pm, wrote:
Quite. This is why SN 377s still take a silly amount of time to open
the doors in the low-level platforms at Victoria (and why they took a /
really/ silly amount of time before whatever solution they currently
follow was added).

Of course one would think that they'd have thought of this before they
rolled out the system and would have had some fullproof alternative
system in place to start with. But then this is Britain so who am I
kidding...

B2003

"Paul Rigg" wrote in message
...

How on earth can GPS be used at St Pancras LL or for that matter City
Thameslink.

You need to have a clear view of the sky - I would also have though
Farringdon (or any other station with a roof) would have been difficult.,

Repeaters? Leaky wires?

On Mar 18, 10:55*pm, wrote:
"Paul Rigg" wrote in message

...



How on earth can GPS be used at St Pancras LL or for that matter City
Thameslink.

You need to have a clear view of the sky - I would also have though
Farringdon (or any other station with a roof) would have been difficult..,

Repeaters? Leaky wires?

Wouldn't work with GPS because it relies on specific delays from the
satellites to work out where it is. If you rebroadcast a GPS signal
your position will be shown as where the initial receiver is , not
where you are. In theory you could retime the signals or broadcast
your own fake signals but I imagine that sort tech wouldn't come cheap
though maybe I'm wrong and its available in Maplins these days!

B2003