The measures require passengers to demonstrate that electronic devices in carry-on luggage can be activated. If a device is inoperable, the passenger will be barred from taking it aboard the aircraft. The devices in question include all electronic and electrical appliances, including laptop computers, tablets, and mobile phones. Passengers are also advised that devices in checked baggage could be screened as well. The additional measures could lead to increased time clearing airport security, particularly if passengers are denied access at security lines until they can charge their appliances.