Gadget: Voice Box
Allows a person to change his voice to resemble someone else's.
007 uses the voice box to make Blofeld think he was one of his goons, thus gaining the whereabouts of Willard Whyte.
Apparrently, it didn't work very well, as 007 had to use an elaborate rouse to distract Blofeld from the fact that his voice didn't sound right.
Once more unto the breach dear friends...