You could use code from here on a Mac, http://osxbook.com/book/bonus/chapter10/a...

		dougb on Jan 23, 2015 \| parent \| context \| favorite \| on: A dead man's switch for your computer? You could use code from here on a Mac, http://osxbook.com/book/bonus/chapter10/ams2hid/ It would probably be best to have multiple triggers.