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DCENT X fingerprint authentication or registration doesn't work.

[Fingerprint authentication keeps failing.]​

DCENT X allows up to 5 fingerprint attempts. After 5 failures, fingerprint authentication stops and the device switches to PIN authentication.

What you will see

  • Each failed attempt removes one segment from the circular gauge, and a red message appears at the bottom of the screen: "Fingerprint not recognized. Please reposition your finger."
  • When only one attempt is left, the gauge shows a single segment.
  • After 5 failures the device shows "Fingerprint failed 5 times. PIN entry is required." and switches to the PIN entry screen.

What to do

  • Change the angle and position of your finger and try again.
  • If recognition stays poor, delete the existing fingerprint under Settings > Security and register it again.

If PIN authentication also fails

  • If all 10 PIN attempts fail, the device resets itself and every key stored inside is deleted.
  • To recover your assets after a reset you must have your R3covery Card or your 24 recovery words (mnemonic code).

User guide

[My fingerprint is not recognized, so I cannot register it.]​

The fingerprint sensor is located on the right side of the device. If recognition fails during registration, a message asks you to move your finger and try again.

What to do

  • Check that there is no moisture or dirt on your finger or on the sensor.
  • Follow the on-screen guidance and place the same finger repeatedly, shifting the position and angle slightly each time.
  • If the "Fingerprint registration failed" screen appears, tap "Register again" to retry.
  • If it keeps failing, try registering a different finger.

Notes

  • Fingerprint registration can be skipped - a PIN alone is enough to unlock the device and sign transactions.
  • Even if you skipped it during the initial setup, you can register at any time from Settings > Security > Add fingerprint.

User guide

[Fingerprint authentication does not work while signing a transaction.]​

After you review the transaction details and press the confirm button, fingerprint authentication is requested. If you have not registered a fingerprint or authentication fails, you can sign with your PIN.

What to do

  • Place your finger on the sensor (on the right side of the device) again, changing its position and angle.
  • After 5 failed fingerprint attempts the device switches to the PIN entry screen. Enter your PIN to complete the signature.
  • If you have not registered a fingerprint and use only a PIN, you sign with PIN authentication from the start.

If PIN entry suddenly stops working

From the 5th attempt onward a waiting time applies to PIN entry. While you wait the device shows “Available in N seconds”, and you can enter it again once that time has passed.

  • Attempts 5-6 : 5 seconds wait / Attempts 7-8 : 30 seconds wait / Attempt 9 : 60 seconds wait

Caution

If the PIN also fails 10 times in a row, the device resets itself. After a reset you must restore it with your R3covery Card or recovery words.

User guide