(Nymi Band 3.0) Authentication Failures

When authentication of the Nymi Band fails, the Nymi Band vibrates and displays a message.

Note: The Nymi Band does not vibrate if the Haptic Feedback on Nymi Bands is not enabled for the user or active group policy.

Nymi Band authentication failures occur for one of the following reasons:

  • Fingerprint matching failure—when the authentication fails as a result of a fingerprint mismatch, the Nymi Band vibrates and displays a NO MATCH image about 1 second after the user places their finger on the fingerprint sensor and bezel. When the Nymi Band screen displays the fingerprint icon, the user can retry authentication. The message that appears on the Nymi Band screen when there are subsequent authentication failures due to fingerprint depends on the number of consecutive failures:
    • When there are less than 4 consecutive fingerprint match failures, the NO MATCH image appears.
    • When there are more than 3 consecutive fingerprint match failures, the Nymi Band displays a message that provides advice that can result in a successful authentication. Possible messages include CENTER FINGER, WASH & DRY HAND & WRIST, and CLEAN BAND.
  • Liveness failure—when the authentication fails due to the inability to detect a consistent ECG signal on the wrist, the Nymi Band vibrates and displays the NO ECG message about 13 seconds after the user places their finger on the fingerprint sensor and bezel. When the Nymi Band screen displays the fingerprint icon, the user can retry authentication. The message that appears on the Nymi Band screen when there are subsequent authentication failures due to liveness detection issues depends on the number of consecutive failures:
    • When there are less than 4 consecutive fingerprint match failures, the No ECG message appears.
    • When there are more than 3 consecutive fingerprint match failures, the Nymi Band displays a message that provides advice that can result in a successful authentication. Possible messages include SIT STLL, WASH & DRY HAND & WRIST, and DON'T MOVE.

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