[XCSSA] USB reverse-engineering

[xcssa@xcssa.org]

So,

Simple question but don't know a more appropriate forum.

How would I go about spying on USB traffic so that I can
reverse-engineer a device?

I have a screen-locker wireless dongle with a matching small
CR2032-powered transmitter, and I believe it appears as a joystick (!)
to Linux:

[17969247.140000] usb 1-1.1: new low speed USB device using uhci_hcd
and address 10
[17969247.320000] input: KeyMark Semi. Wireless PC Lock as /class/input/input13
[17969247.320000] input: USB HID v1.10 Joystick [KeyMark Semi.
Wireless PC Lock] on usb-0000:00:11.2-1.1

What I want to do is write software to lock my screen when the
transmitter goes out of range, but in Linux.  Because I'm too
forgetful to do it manually, and at work here people have a habit of
sending out emails saying you'll be buying lunch or something
embarrassing if they notice your terminal unlocked....
-- 
Enhance your calm, fellow citizen; it's just ones and zeroes.
Unix "guru" for rent or hire -><- http://www.lightconsulting.com/~travis/
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