How would they enforce this? Are the airports concerned, going to pay for the extra screening needed to identify where people are flying to and then screen them differently? At this point, people will also have checked in any luggage, meaning they would lose their devices at security. If they aren’t going to be screened separately, then are the gate agents/airline crew going to check? I think the above article probably has more truth in it than any realistic security threat. If you can’t enforce the ban, then what’s the point.