Originally Posted by
emperor_skull The only way this feature will be available on the 920 or another Lumia apart from the 930 and 1520, is when MS makes the passive hearing work or get activated when the phone is charging, just like what IOS did with Siri
Erm... I think they are just asking after Cortana... I did not see the phrase "Hey Cortana" anywhere in this thread.
Passive listening is not a requirement for Cortana. There are Region and Language restrictions on Cortana at this time, but Cortana should be making her way to more and more devices over time, irregardless of hardware.