cat /proc/bus/input/devices

I: Bus=0003 Vendor=046d Product=c216 Version=0110
N: Name="Logitech Logitech Dual Action"
P: Phys=usb-bcm2708_usb-1.2/input0
S: Sysfs=/devices/platform/bcm2708_usb/usb1/1-1/1-1.2/1-1.2:1.0/input/input0
U: Uniq=
H: Handlers=js0 event0
B: PROP=0
B: EV=1b
B: KEY=fff 0 0 0 0 0 0 0 0 0
B: ABS=30027
B: MSC=10

I: Bus=0003 Vendor=04d9 Product=2519 Version=0110
N: Name="2.4G Wireless Touchpad Keyboard"
P: Phys=usb-bcm2708_usb-1.3/input0
S: Sysfs=/devices/platform/bcm2708_usb/usb1/1-1/1-1.3/1-1.3:1.0/input/input1
U: Uniq=
H: Handlers=sysrq kbd event1
B: PROP=0
B: EV=120013
B: KEY=10000 7 ff9f207a c14057ff febeffdf ffefffff ffffffff fffffffe
B: MSC=10
B: LED=7

I: Bus=0003 Vendor=04d9 Product=2519 Version=0110
N: Name="2.4G Wireless Touchpad Keyboard"
P: Phys=usb-bcm2708_usb-1.3/input1
S: Sysfs=/devices/platform/bcm2708_usb/usb1/1-1/1-1.3/1-1.3:1.1/input/input2
U: Uniq=
H: Handlers=kbd mouse0 event2
B: PROP=0
B: EV=1f
B: KEY=4837fff 72ff32d bf544446 0 0 1f0001 20f90 8b17c000 677bfa d941dfed 9ed680 4400 0 10000002
B: REL=1c3
B: ABS=1 0
B: MSC=10

[3]+  Terminated              ( evtest $i )