Getting stuck in an airport with no roaming data can be a real drag, so this website is the ultimate tool to give you a bit of help.
A fellow called Anil Polat has set himself the goal of visiting every country in the world when he's not working as a computer security engineer. Along the way he's picked up some tricks for staying connected, including a list of the Wi-fi details of dozens of airports globally.
Now he's put that information (plus more sourced from readers) into an interactive map. Just click on the airport and you'll find out how the Wi-fi is accessed, whether a password is needed and even the best areas in the building for reception.
That's a hugely impressive resource, and it's great to see that the Dublin airport Wi-fi is free and unrestricted. It's pretty fast too in our experience. You can get more information about the project and download the Android and iOS versions of the map over on the official site.