It's something like the medical tricorder from Star Trek: Wave the tricorder in the air at someone and it scans the person's vital signs.
With the Scout, you place it against your forehead and it reads your blood pressure, heart rate, oxygen levels, respiratory rate, and body temperature. It sends that to your smartphone and you can upload it to your doctor, or even your Facebook profile.
The Scout is in the process of getting FDA approval and is expected to be available in March, 2014. This
The Scout is part of a new wave of smartphone home medical devices that VCs are throwing money at these days.