[fprint] Tt eSPORTS Black FP Supported?

[Bastien Nocera]

On Sat, 2018-09-29 at 10:04 -0600, Richi Plana wrote:
> Thanks. I'll bite and get the USB IDs. In case it isn't (and it seems 
> likely since Synaptics' vendor ID isn't on the list),

It's there, under the name "Validity":
https://www.zdnet.com/article/synaptics-acquires-validity-for-255m-dives-into-biometrics/

>  are there guides 
> to help developers figure out how to add support for a new device? Ie. 
> how do devs normally hack USB device driver reverse engineering?

Depends whether Linux drivers are available. Look for "usb reverse
engineering" in your favourite search engine, and you'll see plenty of
hits.

You'd probably first try to see whether the Windows driver supports
more than one fingerprint reader, and see if that one is already
supported which might just need a USB ID added.

Then people usually start by capturing initialisation, and recreating
this part of the communication using libusb (in C, Python, or whatever
else).

Check out the devices for which work was already started at:
https://gitlab.freedesktop.org/libfprint/libfprint/issues?label_name[]=Driver+Request

Cheers