How interesting.. a friend has twin daughters who are in their early 30s. One had a load of hassle getting through passport control in Poland because the EU digital ID system clearly doesn't know how to handle identical twins! Immigration was convinced she was not herself but her sister (who had been on holiday recently and already been through the new ID system.) Presumably whichever one goes through the system first becomes the 'default' twin. #Twin #Doppelganger #Digital #ID