This setting supposedly used to work on previous versions of OS X to enable tap-clicking on the login screen, but this is no longer seems to be the case.
I've tried both
defaults write -g com.apple.mouse.tapBehavior -int 1
and
defaults write com.apple.driver.AppleBluetoothMultitouch.trackpad Clicking -int 1
with each of ~/Library/Preferences, /Library/Preferences and /private/var/root/Library/Preferences (via sudo), both with and without the -currentHost flag, along with some even more obscure places such as /System/Library/User Template/{English.lproj|Non-localized}/Library/Preferences and in /System/Library/LoginPlugins/BezelServices.loginPlugin/Contents/PlugIns/AppleBluetoothMultitouchTrackpad.plist and /System/Library/Extensions/AppleBluetoothMultitouch.kext/Contents/Info.plist, all to no avail (yes, this has been seriously bugging me!)
All this has led me to the conclusion that tap-clicking is hard-coded to "off" somewhere in a login window binary. Are there any experts around here who know whether or not I'm right and if so, whether there's anything that can be done about it?
I've tried both
defaults write -g com.apple.mouse.tapBehavior -int 1
and
defaults write com.apple.driver.AppleBluetoothMultitouch.trackpad Clicking -int 1
with each of ~/Library/Preferences, /Library/Preferences and /private/var/root/Library/Preferences (via sudo), both with and without the -currentHost flag, along with some even more obscure places such as /System/Library/User Template/{English.lproj|Non-localized}/Library/Preferences and in /System/Library/LoginPlugins/BezelServices.loginPlugin/Contents/PlugIns/AppleBluetoothMultitouchTrackpad.plist and /System/Library/Extensions/AppleBluetoothMultitouch.kext/Contents/Info.plist, all to no avail (yes, this has been seriously bugging me!)
All this has led me to the conclusion that tap-clicking is hard-coded to "off" somewhere in a login window binary. Are there any experts around here who know whether or not I'm right and if so, whether there's anything that can be done about it?