Airlines that Approve In-flight GPS Use
Did you know you can use a GPS-enabled device on an airplane? Well, according to this list on many airlines you can. That was news to me.
Now a lot of the utility of in-flight GPS goes, pun intended, out the window if you don't have wifi. On the iPhone, for example, Google Maps pulls all the data down on the fly.
Still. I am sure some developers will come up with creative uses for this with data that remains cached on your device.


