Not being able to capture a good measurement with OptiBP can happen for a multitude of reasons, including: finger not covering the lens completely, too much finger pressure, cold fingers/low blood flow, and/or an irregular heartbeat.
If you see this error message, try the following:
Position your finger over the camera lens as recommended in the photo to cover the camera completely.
Apply less pressure: Try to relax your grip and press gently on the sensor;
Warm up your hands: Hold your hands under warm water or rub them together to increase blood flow to your fingertips.
If you continue to see this error message, please contact us at support@biospectal.com.