On Mon, Oct 26, 2015 at 4:05 AM, <gregory.ba...@laposte.net> wrote: > Hello,
Hi Gregory, > though I found some websites saying that you could build drivers for my > fingerprint reader I never had it working. > > Is it's support supposed to get integrated? > > I remember having learned that to make its driver it was needed that I > dumped some infos from the USB pot under windows but I don't remember where > I read that. > > Well anyway, I wanna help build the open source driver for this - I hate > typing passwords over and over-. > > Please, tell me how I can help? It's not that easy. You need to capture usb protocol with whatever tool you prefer (I usually use wireshark on Linux host while running Windows in VM) and reverse engineer it, i.e. understand what exactly Windows driver does when sending some USB transfer and how exactly device responds. Usually, it involves several try-and-fail iterations. I prefer to develop small prototype (see https://github.com/anarsoul/fprint_aes1660 as an example) for playing with device before starting libfprint driver development. Regards, Vasily > Below is its lsusb -v description > Regards > > gregory bahde > " > Bus 003 Device 003: ID . > Device Descriptor: > bLength 18 > bDescriptorType 1 > bcdUSB 1.10 > bDeviceClass 255 Vendor Specific Class > bDeviceSubClass 17 > bDeviceProtocol 255 > bMaxPacketSize0 8 > idVendor 0x138a Validity Sensors, Inc. > idProduct 0x003d > bcdDevice 1.04 > iManufacturer 0 > iProduct 0 > iSerial 1 00b07aab3692 > bNumConfigurations 1 > Configuration Descriptor: > bLength 9 > bDescriptorType 2 > wTotalLength 46 > bNumInterfaces 1 > bConfigurationValue 1 > iConfiguration 0 > bmAttributes 0xa0 > (Bus Powered) > Remote Wakeup > MaxPower 100mA > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 0 > bAlternateSetting 0 > bNumEndpoints 4 > bInterfaceClass 255 Vendor Specific Class > bInterfaceSubClass 0 > bInterfaceProtocol 0 > iInterface 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x01 EP 1 OUT > bmAttributes 2 > Transfer Type Bulk > Synch Type None > Usage Type Data > wMaxPacketSize 0x0040 1x 64 bytes > bInterval 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x81 EP 1 IN > bmAttributes 2 > Transfer Type Bulk > Synch Type None > Usage Type Data > wMaxPacketSize 0x0040 1x 64 bytes > bInterval 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x82 EP 2 IN > bmAttributes 2 > Transfer Type Bulk > Synch Type None > Usage Type Data > wMaxPacketSize 0x0040 1x 64 bytes > bInterval 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x83 EP 3 IN > bmAttributes 3 > Transfer Type Interrupt > Synch Type None > Usage Type Data > wMaxPacketSize 0x0008 1x 8 bytes > bInterval 4 > Device Status: 0x0000 > (Bus Powered) > " > > ________________________________ > De: "Vasily Khoruzhick" <anars...@gmail.com> > À: "Marcos Alano" <marcoshal...@gmail.com> > Cc: fprint@lists.freedesktop.org > Envoyé: Samedi 24 Octobre 2015 07:04:35 > Objet: <DKIM> Re: [fprint] Minutiae question > > Hi Marcos, > > On Fri, Oct 23, 2015 at 8:26 PM, Marcos Alano <marcoshal...@gmail.com> > wrote: >> Hello folks, >> >> How many minutiae is considered a match during verification? I can't >> find this information on fprint documentation. > > We're using bozorth3 algo, which provides a matching score, not a > count of matching minutiae. > Bozorth3 threshold depends on driver, for most drivers it's 40 > (default value), for some drivers it's lowered. > > Regards, > Vasily > >> Cheers. >> -- >> Marcos Alano >> ---------------------------------------------- >> P: Por que este email é tão curto? >> R: http://five.sentenc.es >> ---------------------------------------------- >> _______________________________________________ >> fprint mailing list >> fprint@lists.freedesktop.org >> http://lists.freedesktop.org/mailman/listinfo/fprint > _______________________________________________ > fprint mailing list > fprint@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/fprint > _______________________________________________ fprint mailing list fprint@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/fprint
