Figure 2

LPWD packet statistics. Panel (a) shows the distribution of RSSI values (\(\mbox{bin-width} = 3\)) observed by single badges over a week (24 hours, 196 badges); (b) Correlation between distance (x-axis) and RSSI (y-axis) values shown as a density plot (based on GT3 dataset); (c) Recorded RSSI values as a function of time in settings where the relative orientation of participants has been changed (based on GT2 dataset; position FF: face to face, SS: side by side, BB: back to back; distance: 10 cm, 1 m, 2 m)