My only gripe with this mode (with Opal in Sydney) is that you don’t get the trip fare displayed on the gate when you pay with a payment card. I imagine this is

My only gripe with this mode (with Opal in Sydney) is that you don’t get the trip fare displayed on the gate when you pay with a payment card. I imagine this is a technical limitation (Opal stores trip detais on-card, which it can’t do with a payment card), and is a low priority anyway (as you don’t need to know when to top up a payment card) but would be nice to have.