HP iPAQ h5400 Series Reference Manual page 145

4. On the Fingerprint screen, tap the finger on the display you
want to enroll.
5. Swipe the selected finger. It is recommended that you gently
swipe your finger downward across the sensor. You should
begin the swipe at the first joint of your finger and continue
downward with a smooth slow motion.
If you need additional assistance at any time, tap the Training
button.
6. Monitor the status to see if your fingerprint was correctly
swiped.
If OK, the perimeter of the oval turns green and a message
displays indicating the quality was good. If poor quality, the
perimeter of the oval turns red and a message displays.
Reference Guide
Using the Fingerprint Reader
5–7