NFC-on-phone seems to be taking time to roll out. I think 2D barcodes should be explored as an interim measure with the on train ticket seller being able to capture the barcode on an app and be thus authorised to issue a ticket. I saw a facebook status from a mate who lives in London who just took a Heathrow Express and then a Delta flight with no ID except his passport and two 2D barcodes.
What makes me laugh is that this facility (online booking) can be done for Nenagh but Carrick-on-Shannon it's still "no online ticket available"
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