Resources for the print article.
Validation Technologies International: www.validationtech.com
Matrix: www.hwlvegas.com/new-bill_acceptors.htm
libhid: alioth.debian.org/projects/libhid
libusb: libusb.sourceforge.net
USB HID specifications v1.11: www.usb.org/developers/hidpage
USB HID Usage Tables (HUT) v1.11: www.usb.org/developers/hidpage
Hotplug examples: cvs.ailab.ch/cgi-bin/viewcvs.cgi/external/libphidgets/hotplug
usbsnoopy: www.wingmanteam.com/usbsnoopy is a newer version, it has a nice XML output that makes the snoop easier to read
usbsnoop: benoit.papillault.free.fr/usbsnoop older snoop, as used in this document.
MGE hidparser: www.mgeups.com/opensource/projects/hidparser.htm
“Snooping the USB Data Stream” by Greg Kroah-Hartman: /article/7582
