Electronics Must Power Up to Be Allowed on Planes

As part of an effort to tighten security on flights into the United States, some overseas airports will begin asking travelers to turn on electronic devices, such as cellphones.

Those that will not power up will not be allowed on the flight, and the owner may also undergo additional screening, according to a press release on Sunday from the Transportation Security Administration.

The announcement comes four days after Homeland Security Secretary Jeh Johnson announced additional security measures for some flights entering the United States.

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ABC News reported a week ago that the new measures were on the way in the wake of new threats from terrorists in Syria who were developing a new generation of bombs that are harder to detect through current methods.

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