Best practices for using the application

Best practices for using the application

rPPG - By Face

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In order to get accurate vital-sign readings, follow the below instructions:

  • Device:
    • The mobile device should be in a fixed position during the entire test.
    • The device should be placed within arm’s length of the subject (40-50cm away).
    • The device battery level should not drop below 50%.
    • Do not use the SDK when the phone is in power-save mode.
  • Subject:
    • Each measurement set is for a single person.
    • The subject must be sitting or standing still during the measurement.
    • The subject should have a fully exposed face.
  • Environmental conditions:
    • The surroundings must be lit.
    • No light source behind the subject's face.
    • No direct sunlight.
    • No lighting changes during the test.
    • No flickering lights reflecting on the face.
  • Measurement:
    • Duration – The full test period is up to 3 minutes, 65 seconds if you don't get any warning or errors.
    • Vital signs appearance - each vital sign appears when there is sufficient data. However, there may be cases in which a summary value is not available for some vital signs, see the Partial Summary Report section below.

 


PPG - By Finger

How to use with iPhone 11 Pro?

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When using the By Finger (PPG) mode, the following recommendations apply

  • Device:
    • The mobile device should be in a fixed position during the entire testing period.
    • The device should be held by hand.
    • The device’s battery level should not drop below 50%.
    • Do not use the SDK when the phone is in power-save mode.
  • Subject:
    • The subject must be at rest during the measurement.
    • The hand should rest comfortably at heart level.
    • iOS - Use the index finger to fully cover both the rear flashlight and the relevant rear camera.
    • Android - Use the index finger to fully cover the relevant rear camera, without covering the rear flashlight.
    • When placing the finger on the camera, apply moderate pressure.
    • Avoid movement of the finger during the test.
  • Environmental conditions:
    • Should not be in complete darkness.
  • Measurement:
    • Duration - The recommended duration for the finger test is 1.5 minutes (90 seconds).
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