a program that monitors keyboard activity and disables the touchpad when the keyboard is being used

-i <idle-time>
       How  many  seconds  to  wait  after  the last key press before enabling the touchpad.  (default is
       2.0s).

-K     Like -k but also ignore Modifier+Key combos.

-R     Use the XRecord extension for detecting keyboard activity instead of polling the keyboard state.

-d     Start as a daemon, ie in the background.