This doesn’t look like the breakthrough the headline suggests, at least for glucose monitoring. They created a material that contracts/expands depending on mea

This doesn’t look like the breakthrough the headline suggests, at least for glucose monitoring. They created a material that contracts/expands depending on measurement levels, and that can be detected by the magnetometer. But the sample needs to be deposited in it. This is not a non-invasive glucose monitoring solution, and current under-skin devices will remain a lot more convenient. A magnetometer costs $1-$5, plus a couple dollars for a microcontroller, what will likely happen is that this will result in a new breed of devices that offer laboratory precision at very low cost. The phone part is irrelevant.