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> The F.A.A. does allow some electronics during takeoff and landing. Portable voice recorders, hearing aids, heart pacemakers and electric shavers are permitted during all times of a flight

For pacemakers, do they have a choice? Could the user reasonably turn off his pacemaker during takeoff and landing if he wanted to?

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Electric shavers are a really odd addition to that list.

They are on the list probably exactly because they look like weird addition. Electric shavers were probably first consumer devices that look simple (and thus not relevant for EMI/EMC) but often contain surprisingly complex switched mode power supplies.

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