Non-invasive glucose meter is also a kind of glucose meter, the main difference between it and ordinary glucose meter is that it doesn't need to destroy the skin for blood collection, which is the reason why it is named as non-invasive glucose meter.
Ordinary blood glucose meters need to collect blood, and there are two kinds of difference from the working principle, one is photoelectric type and the other is electrode type.
Non-invasive glucose meters, on the other hand, do not require blood collection and use infrared, electromagnetic, thermal capacitance, ultrasound and other methods to indirectly test the glucose concentration in the blood.