Namely the path tracing I'm interested in. I think this is the doo hickey in the Apple get your butt off the couch commercial.
I am a little surprised that more of these are not available on the market. The value has to be in the software because the hardware shouldn't cost more than $3-$5. 2 accelerometers and a 3 DoF Gyro, some flash memory and a battery.
I would have to ask some friends why they need 3 chips rather than having one 6 DoF Gyro.
Even if we say the sensor cost $10 that is still $140 in software which means there is room for competitors to come in.