How do I enable "Factory Reset Protection" in Lollipop I keep reading that Android 5.0 has "Factory Reset Protection", the so-called "Kill Switch" soon to be mandated in California, but that it's opt-in.  How do I opt in?  I've looked thru settings, including using the Settings search, but haven't found anything that sounds like this.  I'm on a Nexus 5.
In speaking with Motorola Support through some reliable channels, here's what they said: "Since all comments regarding Factory Reset Kill is not approved yet by Motorola, we cannot give you the answer". In other words, it's not released, you won't find the option available yet and they can't tell you why. As of 1/20/2015.