I saw this today when I was googling something else.There is a new pain free device right now in the prototype stage that can test glucose using saliva and not blood.It is a small meter similar to what most diabetics use to test blood samples.It uses a plastic strip that the person sticks in their mouth to get a saliva sample.Then it is stuck in the tester the same way as conventional test strips.
Here are 2 links to the product and info.Hope they market it soon!