Over time, we advise HeartID™ users to ‘enhance’ their biometric profile; this gives the algorithm more information to work with so that the device can authenticate you faster.
If you have HeartID set up, the Nymi Band app will periodically remind you to enhance with a red notification dot beside the HeartID icon in the dashboard.
What if my heart rate changes throughout the day?
The Nymi Band uses the unique characteristics of your electrocardiogram, which remain consistent over time. While the rate of your heart’s beat may change during the day (i.e. after that cup of coffee or long nap), your electrocardiogram (the waveform from your heart’s electrical activity) should still be recognized by the Nymi Band. If there is a particular time of day or situation where you have difficulty authenticating with HeartID, enhancing your biometric profile will improve your outcomes.