Attune Health can measure the vital signs of only one person at a time.
In situations where there are multiple subjects looking at the camera during a session, the app will select and provide the readings for the person who is the closest to the camera.
The reason for that is that the facial recognition process only works with one face at a time, and does not track multiple faces during the same session.
We highly recommend that only one face of one subject will be present during a measurement, in order to avoid miscalculations and algorithm malfunctions.