Looks like it is in the .GlobalPreferences, you can run this command however it does not take immediate affect unless you logout/reboot.

defaults write ~/Library/Preferences/.GlobalPreferences CGDisableCursorLocationMagnification -bool YES

defaults read ~/Library/Preferences/.GlobalPreferences.plist CGDisableCursorLocationMagnification

It's inverted (is disabled), so NO is checked and YES is unchecked.

EDIT: Oops. Sorry, late to the party.

I might at this if you are looking to do a mass rollout:

#!/bin/sh



#Set arguements for script

loggedInUser=""



#Writes current user that is logged-in into terminal

loggedInUser=`/bin/ls -l /dev/console | /usr/bin/awk '{ print $3 }'`



#Use sleep if you are using login trigger, due to login time differences can cause false users

#sleep 2



#Settings Cursor Magnification to off

su -l "$loggedInUser" -c "defaults write ~/Library/Preferences/.GlobalPreferences.plist CGDisableCursorLocationMagnification -bool YES"



#Checking Cursor Magnification and reporting to Casper logs

su -l "$loggedInUser" -c "defaults read ~/Library/Preferences/.GlobalPreferences.plist CGDisableCursorLocationMagnification"

Thanks @jjones This worked perfectly