why hand Communion can never be more hygienic

When writing the 2nd post on Senator Kerry and hand Communion, a question came to mind:

How does the Nuncio even know where the Senator’s hands are unless he is making physical contact with them? He's doing what they call in basketball a 'no-look pass'! This is where the claim that hand Communion is hygienic collides with reality. Actual physical body to body contact is being made with almost every instance of hand Communion, with Communion on the tongue it happens once in a blue moon. I’ve been told this by people who do it both ways.
There is simple geometry involved here. When the person taking Communion in the hand ‘makes a throne’, her fingers form a shield which the minister must overcome and eventually contact unless he is simply going to drop the host into her hands. If the minister tries to go over and in, he will still contact the shield.