<div dir="ltr"><div><div><div>Hi libfprint folks -<br></div><div><br>I've got a Digital
Persona U.are.U 4500 fingerprint reader, and I'm trying to migrate to
libfprint from the closed source drivers I got from Digital Persona
themselves. <br><br>The driver chosen by libfprint is uru4000, which
seems right. When I call fp_dev_get_nr_enroll_stages on the device, it
returns 1: a single scan is enough to enroll a fingerprint. and indeed, I
can scan my finger once and get back a fp_print_data struct (through
the callback passed to fp_async_enroll_start).<br><br>However, the old
closed source drivers had a way to capture a set of 4 scans of the same
finger (what they called an "enrollment", as opposed to a single-scan
"capture") that were merged together to form a more robust, reliable
view of the finger. Is there a way to mirror that functionality with
libfprint, given that my device seems to use just 1 stage for an
enrollment? <br><br></div><div>The motivation here is that when someone
registers their fingerprint, we want to make sure we've got a high
quality scan on file, so that they can reliably match it later. <br></div><br></div>Thanks in advance for your help.<br><br></div> - Alan</div>