The Boy Genius reportsIt’s actually pretty simple… Your Apple ID will be registered with your device/s, and that will allow other Apple devices to start a FaceTime call using your email address. Apple will also reportedly make use of push notifications to deliver these incoming FaceTime connection requests as we have been informed there is a push notification detector tied into the FaceTime frameworks in the new iPhone OS 4.1 beta.”
Red more in the full article here.
[Thanks to MacDailyNews Reader “Chris D.” for the heads up.]