Automatically Accept FaceTime Calls in Mac OS X
You can set FaceTime to automatically accept incoming FaceTime calls from approved phone numbers or email addresses. You’ll need to have FaceTime for Mac installed, and then use the Terminal and the defaults command:
Auto-accept FaceTime calls from a specified email:
defaults write com.apple.FaceTime AutoAcceptInvitesFrom -array-add firstname.lastname@example.org
Auto-accept FaceTime calls from a specified phone number:
defaults write com.apple.FaceTime AutoAcceptInvitesFrom -array-add +14085551212
Make sure the string is all contained in one command on one line.
You can add as many pre-screened email addresses and phone numbers that you’d like (Obviously this only works in Mac OS X).
This is a neat trick that I was trying to figure out how to do on my own when I stumbled on a post from a computer repair company amusingly named CornDog Computers. Apparently they were writing an application that would automatically answer calls when they discovered you can do it manually through the defaults command.