There’s a new paper on DE-auth of the Blue! Transparent De-authentication Using Bluetooth Low Energy Beacon. While the paper is behind a paywall, the paper’s abstract provides enough information to determine the intent.
When people move away from their desk, for example for lunch, they often don’t log out. It can be some time before the screen saver kicks in and logs the user out. The paper takes a look at the use of beacons to provide de-authentication when the person moves away from their desk.
This is a much simpler method than previous research that used Seated Posture Biometrics (pdf).