> Backscatter doesn't pose any health risk to travelers. This is possibly only true if there are no problems with the machines. If the machine is functioning

> Backscatter doesn't pose any health risk to travelers. This is possibly only true if there are no problems with the machines. If the machine is functioning properly, an X-ray beam will quickly scan you from head to toe. But if the scanner gets stuck (which happens from time to time), all of the dosage is concentrated in a single part of the body.