Yeah, haptic feedback is challenging. The thing that gets challenging in my opinion with 3rd party haptic sensors is a low latency integration. Also, there are no hardware standards that define performance/latency requirements for a good AR experience. All those things will contribute to designing haptic devices.
Because AR itself is not mainstream yet, it is quite hard to figure out what is the right haptic feedback that feels natural. I am hoping this will evolve.
Theoretically can't Facebook can create a similar app with about 99% accuracy?
On a tangential note, privacy is going to have interesting connotations as we build wearables and work to forget different ways of socially connecting them.
Will be excited if they ship. The technology (AR, MR whatever you want to call it) will redefine how people collaborate.
Companies that keep things under wraps showing bits and pieces are hard to trust. Demos are easy. In a perfectly orchestrated environment, you can show whatever you want. It means very little in terms of what your final product/experience will be.
The MR effects are awesome, but for the use cases the demo targets, it needs to be more...seamless? Probably it is just the way the demo was shot. Also, I would love for them to dismiss the windows, declutter the space and pull other things back in. I understand this just showcases all possibilities, but I feel a story could be told better.
For instance, the email around Mt. Everest project was cool. Showing an interaction with the project would have been cooler. But, fun stuff nevertheless.