HP iPAQ h5400 Series Reference Manual page 130

Using the Fingerprint Reader
To learn to enroll fingerprints:
✎
You can tap OK at the top of the screen at anytime to exit the
training.
1. From the Start menu, tap Settings, then Password.
2. Select PIN or fingerprint from the down arrow list to access
training.
3. Tap 4 digits in the PIN field.
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