Ms Anne Graham:

The overall solution, which is next generation ticketing and is now under procurement, is an account-based system. Under that, it will be much easier to set up accounts and track people's movements via their cards, mobile phones or other means, for example, barcodes. This will require upgrading gates to ensure that we record people going in and out of the system. However, this is a longer term solution. The procurement process has only just commenced and delivery will take a number of years. It will not provide an immediate solution to the issue in question.