Tracking using Oyster
Regarding other comments about being able to be tracked via Oyster...they can certainly do that if they so wish, with the data they record everytime the Oyster card is swiped on entry and exit to the underground.
I would not be at all suprised if the Police and security services have access to this data(without any kind of regulation, consent of the voters): the inland revenue has access to the data collected on Nectar cards used in supermarkets.
Haven't people noticed that under Livingston there's been a drive to push as many people into taking up Oyster, by making it much cheaper than tickets.
TfL want the data that is captured using Oyster!! That's what it's about. What we don't know is just who else has access to this data and how it is being used.
We need much more transparency and honesty.