I have LM 12 installed (+Cinnamon) and my mouse pad does not give me the option of turning off "Tap-to-Click". Nor do I have the options of disabling the touchpad while typing.
I was, however, able to add a notification area program that disables the touchpad when a mouse is installed. Touchpad-Indicator 0.9.1.6. And that did its job.
I also installed gpointing-device-settings. But that has very few options. See attached photo. I still cannot turn off the tap-to-click when using the touchpad. Nor disable touchpad while typing.




