The Netherlands you can check-in using a bank card How does that work for a family with kids? FAFAIK you can't check in twice using the same card, so does ever

The Netherlands you can check-in using a bank card How does that work for a family with kids? FAFAIK you can't check in twice using the same card, so does every child need its own bank card or travel pass? In that case, when travelling with a group, I'd choose the app over a stack of plastic cards any day.