Originally Posted by jib71

In most respects, Dublin airport is a total mess, but the immigration-before-boarding arrangement was a pleasure.

I started wondering if there could be some way to extend this arrangement so that every flight gets fast-tracked. Of course, it's not feasible to send one country's immigration personnel to every airport in the world... But perhaps immigration queues could be eliminated with some new technology... I'm thinking maybe passport scanners at departure airports or onboard planes with broadband connections and video conferencing to allow 99.9% of passengers to complete immigration processes before boarding or during the flight.