The U.S. is tighting its airline security protocols by asking passengers of certain flights to prove their devices are fully powered on before boarding. NBC News reports that TSA agents “may ask travelers to turn on their electronic devices at checkpoints and if they do not have power, the devices will not be allowed on planes.”

These new security protocols are part of a new TSA effort to boost security amid concerns a terrorist plot could threaten airlines coming into the U.S.

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Among the devices that could be asked to be turned on are laptops, tablets, and smartphones, of course, as any of these could be used as a bomb.

The new checks should be starting immediately, so don’t be surprised if you’re asked to turn on your electronic devices before boarding soon.