You can't see the lag most of the time as you get the see both video feeds from the sensor, however at 3:38 there is a brief moment with the camera behind him and you can see the lag.

It's better but indeed not as much improvement as I hoped for. They can track your thumb now, and all fingers lumped together, crab man. Plus it started spazzing out with 5 people in the room. The heartrate measuring didn't look all that stable either, or he had a bad case of arrhythmia.

Looks fun to play around with for a while, the load sensing and rotational limbs looked the most impressive. Accurate head tracking?
Now show me some games.

Actually, Kinect Party and Happy Action Theatre, both from Double Fine, can track up to 6 people with the current 1.0 Kinect.  Now, when you get that many people in a frame, it does get crowded.  And you even get an achievement from it!

Six Pack! - you have a big living room. (Get 6 players playing at once!)

 But the Xbox One is 6 players tracking fully, quite a bit of an upgrade to the current one.  I'm still waiting for them to release some amazing movement kinect games for the X1.

Isn't that video at least 1-2 months old?

What I noticed is that finger tracking seems to be completely unreiiable btw, to the point of being unusable.

Old video...not sure if I will ever be sold on kinect for UI
great fun for the kids and social gaming

the heart rate measurement shown are micro vibration of the skin not the actual rate graph.... but from that it can extrapolate your heart beat.... pretty similar to what you have on cellphones right now in more accurate and technical manner I guess.... but the curve wasn't the heartbeat graph....

and about hand tracking.... can't they reallocate tracking points if they don't use full body tracking????

Dang it, I thought this was a new video.

They're not focusing on it in the same way. Yes they have a camera and it does some stuff but it's not the focus of what they're doing because it's being done as a add-on and i'm happy for it. I like a traditional console which is more about the evolution of traditional games. I'm happy about Wiiu and PS4 right now.  Gonna probably get a One a few years down the road when it is much smaller and cheaper.

There is an IR LED in the Xbox One Wireless Controller that allows the controller to be tracked by Kinect.  With nightvision turned on in the video, you can see the Kinect's IR LED emitters and make out the Xbox One Wireless Controller's emitter.