Gamerace on 13 June 2012
Last official word was the tech only worked accurately for 90% of users. Meaning if they'd launched it, 10% of people wouldn't be able to play the game(s) properly. They were looking for ways to boost that percentage into the high 90's before making it available.
Since we haven't heard about it since, we can assume either the tech to do so isn't yet (economically) available or it's just been scrapped altogether.
