The device didn't work very well, caused burns, and is (I believe) no longer being manufactured. Also, the level of accuracy that is useful to diabetics (who are concerned that their blood glucose may be at 200 or at 50 mg/dl) is not going to suffice for someone who is trying to stay within the optimal part of the normal range, which is probably a range of like 85-110 mg/dl. And by all accounts it wasn't even that good. Bummer, really.