Hoping and London Mumsnetters can advise, I've looked on the TfL website but can't see an obvious answer. I usually use contactless payment on the underground but my dd has been under 5 when we've been before, she's now 6 so needs to pay but I can't work out if I can pay for both of us with the same card by touching in and out at stations? I'm presuming I can't and will need to get her a travel card but just wanted to check I'm not missing anything obvious.