The title is not the original and is misleading: The smartphone measures glucose in a gel containing minuscule magnetic particles in a small container near the

The title is not the original and is misleading: The smartphone measures glucose in a gel containing minuscule magnetic particles in a small container near the phone's magnetometer. As the gel reacts, it moves and this displacement is detected by the phone. So it was never intended to measure glucose in the blood of a living creature. It seems to me the innovation is: 1. in making the phone directly measure the amount of glucose 2. in inventing a gel that reacts to the presence of glucose by expanding or contracting. Indeed as stated in the article, they could measure other things than glucose, it's just a matter of using other nano-particles