Figure 3.

Non-contact adherence-independent multi-person weight monitoring. (a) Cartoon of partners sharing a bed. (b) Overnight measurements of two partners sharing a bed. Colored signals indicate individual sensor tracings. Black indicates the sum of sensors. Sudden weight changes due to each person getting into and out of the bed are color coded (blue and pink) and annotated. (c) Illustration of synchronicity protocol for measuring total body weights at progressively shorter time intervals. (Person = P) P1 On, P2 On, P1 Off, P2 Off, then repeated exchanging P1 and P2. (d) Corresponding total weight signal measured by the BedScales with a time interval of 30 s, (e) 15 s, and (f) 5 s. (g) Estimates of decoupled weights of the two individuals sharing a bed for each synchronicity time interval and corresponding weight measured by a commercial floor scale (mean + standard deviation).