First have my congrats on the work you've done with the Cardboard, pretty neat
As I started experimenting, I added 'cardboard: 1' option to 'client.init'. Unfortunately, I ran into an odd problem: after implementing your viewer within an iframe, the Cardboard view appears, but no headtracking. Maybe I just need to add one more option that I am not aware yet (to activate gyro-tracking). Do you have any suggestion?