I suppose I should just try (don't have an android ATM) but in the past, ever time I've tried one of these AR demos it requires basically perfect lighting. Nothing is ever stable, the thing being projected to match the world bounces around, disappears, jumps 10-30cm.

I'm rarely in a good lighting situation apparently.

Has this kind of thing gotten any better?

If you are having problems using this it's because only a handful of mobile browsers allow the camera feed.

See my question to HN here about this: https://news.ycombinator.com/item?id=13593193

Really cool.

I've tinkered with Augmented Reality in Android some years ago but all I got was a native module (actually ARToolkitPlus) and you'd send frames from the camera to it and it would identify markers and output the area where it was located in screen coordinates.

Once more really cool work on AR.js!

Super cool! Good framerate too... I wonder if there's a workout to get run it on iOS.

Not until Apple implements getUserMedia in Mobile Safari.

None of the demos work for me. I only see the camera picture. Firefox for mobile.

Unfortunately this doesn't do markerless.

AFAIK, ARTK doesn't do markerless. ARTK is owned by Daqri, and last I knew, Jerome was still working there; so I'd bet that it this integrates with the Daqri tracking cube (for markerless) before ARTK gets the feature. Mostly because, AFAIK, the cube exists and the pure software version doesn't.