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From a Kodak technical support page:
Among precautions that travelers can expect will be the increased use of new, high-intensity x-ray scanners for checked baggage and hand-carried baggage. Passengers should be aware that these high-intensity x-ray machines will fog and ruin all unprocessed film of any speed, whether exposed or not. Kodak recommends that air travelers do not carry unexposed or unprocessed motion picture film.I wonder if computer hard drives will be affected as well.