On 23 Apr, 20:47, Paul Corfield wrote:
On Mon, 23 Apr 2007 20:09:41 +0100, Tom Anderson
wrote:
Also, am i right in thinking paper tickets either don't have a unique ID
on them, or that this isn't recorded by gates? If not, LU should already
have had this data.

Some magnetic tickets did have unique numbers but they were a very small
part of the overall population. The vast majority did not and although
they were counted by type at each gate you could not follow "ticket
123456" through the system.

Presumably there is some way to identify a ticket within a station -
so that things like gate zig-zag can be identified?

Or do the gates just 'make it up' with the available data - thus
occassionaly closing out people with 'identical' tickets?

T