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 规范 v1.11: www.usb.org/developers/hidpage

USB HID 用途表 (HUT) v1.11: www.usb.org/developers/hidpage

Hotplug 示例: cvs.ailab.ch/cgi-bin/viewcvs.cgi/external/libphidgets/hotplug

usbsnoopy: www.wingmanteam.com/usbsnoopy 是一个较新的版本，它具有很好的XML输出，使得snoop更容易阅读

usbsnoop: benoit.papillault.free.fr/usbsnoop 较旧的snoop，如本文档中所使用。

MGE hidparser: www.mgeups.com/opensource/projects/hidparser.htm

Greg Kroah-Hartman的“侦听USB数据流”: /article/7582