Comment 63 for bug 1641290

Hi,

I've been retrying, scanning my finger as per Igor's instructions (see below).

For the reminder, my fingerprint scanner is a 04f3:0c01, and my laptop is a Dell Inspiron 7000.

Observations on using the fingerprint scanner:
- scanning a finger with libfprint on a 04f3:0c01 is different than the fingerprint scanners I'm used to (e.g. the typical smartphone scanner, where you just place your finger on the scanner and expect it to read your fingerprint correctly).
- In order for libfprint to successfully read your fingerprint, you need to swipe your finger on the scanner, like that: http://docs.esupport.sony.com/pc/SVS1311_13A1_1511_series/EN/contents/03/17/07/01/01/01/01/02/02.png
- Using this method to scan my finger, the image produced by the scanner seems to be of an acceptable quality.

Success rates:
- After I've enrolled my finger, I ran the verification 10 times, and it successfully matched it to my enrolled finger 6 times.

The scanner seems to be extremely sensitive to the movement you're doing to enroll your finger - if there is any variation (e.g. swipe slightly less, or slighly more of your finger, or apply a slightly different pressure), then the verification fails. I think that's why the verification fails about 40% of the time - as the movement done isn't strictly the same, and differs slightly from the one made at enrollment time, the verification fails.