londonbridge
Established Member
- Joined
- 30 Jun 2010
- Messages
- 1,885
For one thing, all the ticket barriers have to go on is the encoded magnetic stripe on the back of the ticket. This has incredibly limited capacity and does not even contain full details of the ticket type let alone the restriction code, hence it is only possible for the barriers (even if they are correctly programmed, which is not a given) to make a guess at whether a ticket is valid or not.
Agreed. I had an advance from Sunderland to London route EC & connections, got the metro to Newcastle Central, went to go through the barrier to the platform and got a 'ticket not valid at this location' error message.