I'm trying to write the backend for the OptiCard 600+: USB business card reader, if I'm not wrong it's a CIS scanner, plustek with a GT-6801: /usr/local/bin/sane-find-scanner -q found USB scanner (vendor=0x07b3, product=0x040d, chip=GT-6801) at libusb:004:022 The scanner works but still with some problems. Ferran Martínez