Dew, you may not remember that I have been a Type 1 diabetic for 60+ years. I have used the JNJ One Touch "finger stick" system as a measure of blood glucose since the system was introduced. It tells me whether, and how much, of one of the most dangerous, potentially life-threatening, FDA-approved medications---insulin--- should be introduced by injection into my system. I require accuracy even at age 80. I remain free of the usual side effects accompanying the auto-immune disease. Hypoglycemia in the past 2-3 years has been a problem---my doctors correlate that increased incidence of hypoglycemia with the prescribed off-label introduction of EPA, Amarin's Vascepa, into my diet in April 2013.
The solution to that problem has been reduction of insulin intake by ~30% from insulin dose I had taken for years.
My HbA1-c reading has been in the neighborhood of 6-7 for untold years, evidence of excellent control for a Type 1 diabetic.
I agree that the literature "glucose data" for many Type 2 diabetics will not match the above. Death or extreme illnesses[ever increasing health care costs too] among the ever increasing diabetic population is a reason for innovation that is easy to use and provides accurate results. Type 2 diabetics do not often require insulin to control their disease....most require a lifestyle change to avoid the American-style diet + a modicum of exercise to never acquire the Type 2 diabetic condition in the first place.