A person can test blood glucose without taking blood, with GlucoTrack, a sensor that clips onto the earlobe and measures glucose using electromagnetic, thermal and ultrasound technologies. The device sends blood glucose information through a headphone cord to a handheld controller, which displays or announces the result, says Healthline.
Integrity Applications, an Israeli company co-founded by Dr. David Freger, who suffered from Type 2 diabetes, developed GlucoTrack. In 2013, the company obtained approval to sell GlucoTrack in Europe. As of 2014, the company planned to submit its non-invasive glucose-testing device for approval in the United States and to conduct clinical trials, according to Healthline.