MedCam 1.12
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ABOUT MedCam
Measure the pulse and respiration rate of yourself and others using your camera.
This app can often pick up on the subtle variations in face color caused by a heart beat. To test remote heart rate sensing from your face or others, use this app. A more reliable heart rate measurement can be made from the finger using apps such as "Instant Heart Rate".
To use: - Steady the camera by resting it on a table (for example). - Position your face in the top box and shoulders in the bottom box. - Push 'Start' and keep still while the measurement is in progress. - Your pulse and respiration rate will be displayed.
How it works: - Movement of your chest is used to measure respiration rate. - Small changes in reflectivity from your face are used to measure pulse. Each heart beat our faces pulsate - changing in reflectivity by about 1%, if these changes were 2% then we would be able to see them with our eyes, at 1% they are just detectable with a smartphone camera (after a few seconds of measurement).
Disclaimer: This remote sensing software is fallible and so it is not recommended for important measurements.