The American government implemented its initial ban in March across 10 mostly Middle Eastern airports. While it didn't dive into the specific motivations behind the move, it's reportedly in response to a specific threat of bomb-laden fake iPads. If so, the Abu Dhabi change suggests that DHS still believes there's a threat -- it's just confident that it can prevent explosive slates from reaching US-bound aircraft.

Either way, the change could give hope to airlines and travelers alike. As the AP points out, air carriers have seen business drop as a direct result of the ban. Emirates cut 20 percent of its flights to the US, for instance. Portable computing is important enough that some passengers would rather stay at home (or find alternative routes) than do without their gadgets, and airlines may not have much choice but to bend to DHS' will if they want to avoid a lasting drop in business.