What each measurement is built for.

40-180 BPM. A 12-second average.

• 0.64 BPM RMSE vs. ECG at an 80% return rate
• 118 subjects 418 videos, Fitzpatrick types I to VI
• 4 cameras Phones and webcams, handheld and on a tripod

4-40 breaths per minute. A 30-second average.

• 0.67 BrPM RMSE vs. capnography at an 80% return rate
• 93 subjects 184 videos, Fitzpatrick types I to VI
• 2 cameras Samsung S24 and Logitech C920

Valid when pulse rate is 40-180 BPM. Beat-to-beat statistics over 60 seconds (Mean NN, RMSSD, SDNN, Baevsky Stress Index); read the stress index against the person’s own baseline.

• 13.83 ms RMSSD RMSE vs. ECG
• 7.69 ms SDNN RMSE vs. ECG
• 118 subjects 418 videos, one reading per 60 seconds

Valid when pulse rate is 40-180 BPM. Shows the waveform’s shape only, not blood pressure.

• 0.681 Waveform correlation (Pearson r) in 60-second windows
• 118 subjects 418 videos
• Shape only Not a blood pressure measurement

Valid for breathing rates of 4-40 breaths per minute. Chest and abdominal waveforms.

• 0.794 Upper (chest) waveform correlation, Pearson r
• 0.623 Lower (abdominal) waveform correlation, Pearson r
• 93 subjects 184 videos

478 facial landmarks, blink and talking detection, and expression probabilities across eight categories.

• 478 Facial landmarks tracked
• 8 Expression categories, with probabilities
• 2 Binary signals: blinking and talking