1. Enable SHMConfig in your xorg.conf file. Press Alt+F2. It will bring you the Run Application dialog box.
2. Type following and hit enter:
   gksu gedit /etc/X11/xorg.conf
3. It will ask you for your super user password. Give it!
4. xorg.conf should open in gedit file editor
5. Look for following lines:
   Section “InputDevice”
   Identifier “Synaptics Touchpad”…
   …
   EndSection
6. Add the following line just before the line EndSection
   Option “SHMConfig” “true”
7. Save the file
8. Open a Terminal
9. Type the following command
   syndaemon -d -t -i 5
   -d runs the command in background
   -t disables only tapping and scrolling but not mouse movements
   -i sets the idle time in seconds after the last key has been pressed. The default is 2 seconds. I was convenient with 5 secs. It means if I don’t press any key for 5 secs, the touchpad will be enabled.

Now to run make the command as a startup command follow the following steps:

1. Go to System>Preference>Sessions
2. Click on Add button.
3. Fill up the following data in the dialog box that appears:
   Name: { Name of the command such as: Disable Touchpad }
   Command: syndaemon -d -t -i 5
   Comment: { Any comments such as: Disables touchpad’s tapping functionality while typing }
4. Click on OK and Close the Sessions dialog box

Enjoy tapping less typing

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