Originally Posted by ILS 119.5
Hang on, what about the inflight entertainment system which allows you to swipe your credit card and use it as a phone!
Nobody does that because it's too expensive. But the mobile phone systems are supposed to be much cheaper. And then, yes, people will start.
There's also the other factor: people are more likely to pick up their own familiar phone and use it, than using "someone else's phone".