I have written on previous occasions how sensing technologies will take the form of implanted devices (among others). The latest development on this topic comes from Sensionics . They are developing a small sensor designed to be implanted subcutaneously in the upper arm to detect blood glucose levels. From the Sensionics site:

“Encased in a biocompatible material, the Sensor utilizes a unique fluorescent, glucose indicating polymer. A light emitting diode embedded in the Sensor excites the polymer, and the polymer then rapidly signals changes in glucose concentration via a change in light output. The measurement is then relayed to the Transmitter. This entire measurement is designed to be done autonomously and independently without any prompting by the user.”

Sensionics anticipates that their device will be more stable and accurate than protein-based glucose sensing technologies.

The Sensionics device is yet another indication that in the future, sensors and medical devices will essentially become part of us.