In some rail systems around the world, the reloadable fare card can be “passed back” to others behind the gate to use and deduct additional fare from the same card for their travel. This is not the case with the Oyster system, where attempting to touch in or out multiple times causes the second touch to be rejected.
I’m going to be taking my friends on a journey and they do not have Oyster cards. Some systems that do not allow pass-backs allow you to use a ticket machine to purchase tickets for your friends using the currency value on the card.
Does Oyster have a similar system that will allow me to purchase tickets for my friends using the PAYG credit on the card?