Dell XPS L702x Switching Touchpad on/off

As you know, the FN+F3 key on dell XPS L702x does not switch the touchpad on/off.

To do that, you can use the following script to enable/disable the touchpad

#!/bin/bash
enabled=`xinput --list-props "SynPS/2 Synaptics TouchPad" | grep -e "Device Enabled\ (127):\s*1"`

if [ -n "$enabled" ]; then
    xinput --set-prop "SynPS/2 Synaptics TouchPad" "Device Enabled" 0
else
    xinput --set-prop "SynPS/2 Synaptics TouchPad" "Device Enabled" 1
fi

Just chmod +x the file and run it to switch touchpad on/off