If you change trains during a journey at one of the stations listed below, you should touch your card on a pink card reader to pay the right fare.
There are pink card readers on, or in between, London Overground platforms at:
There are pink card readers on the Tube platforms at:
If you don't touch on a pink card reader, you could pay a higher fare. For example, you might pay for a journey that includes Zone 1, even if you haven't travelled through it.
If there isn't a pink card reader where you change trains, it means you don't need to use one.
To see whether you need to touch on a pink card reader during your journey, or if you can take a cheaper route, use the single fare finder.