As far as I know A.I.T. and Rapiscan are two different makers of machines that perform the same function in different ways. Rapiscan machines use the more damaging back scatter X rays not A.I.T. A.I.T use millimeter wave energy which is way lower in the electromagnetic spectrum and doesn’t pose the same threat as the other option. The research the line “despite evidence that the whole body scanner technology is ineffective” points to, refers specifically to the Rapiscan back scatter machines. Read the Article at HuffingtonPost