It’s often not that easy to find an open WiFi hotspot in airports, so a clever guy called Anil Polat has created a really useful travel tool which tells you the WiFi passwords of many airports around the world.

Find your airport on the map below, then click through to find details of the WiFi networks available there.

As well as the web tool, there’s also an app available for Android and Apple smartphones…

We think this is a really useful tool for travelers, especially if you’re keen to keep your roaming cellular data usage under control.