You can look directly at the streaming HID bytes hex(although I can't
remember how, someone here suggested a method a couple of months back) to
confirm this.

from http://www.pabr.org/sixlinux/sixlinux.en.html#inop:

# hexdump -v -e '48/1 "%02x " "\n"' < /dev/hidraw1   # For kernels <  2.6.26
# hexdump -v -e '49/1 "%02x " "\n"' < /dev/hidraw1   # For kernels >= 2.6.26
00 00 00 00 00 74 7b 7c 7c 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 02 ee 10 00 00 00 00 02 b2 77 01 81 02 05 01 ed 01 a4 00 02

Simon