Do I have to show my contactless Barclays debit card, Barclaycard or PayTag to a Transport for London (TfL) ticket inspector or member of staff if asked?
Yes, but you don't need to hand the card to them – just touch it on their portable card reader. If you’re unsure about whether or not they really work for TfL , ask for their ID.
If your card shows that you didn't touch in or out for any part of a journey, you could be charged a maximum fare for each part of that journey. You could also get a penalty fare or be prosecuted if you didn't touch in.
The inspector's card reader will attempt to recover any outstanding fare on your card when you touch it.
Find out more about TfL's contactless card service.