I'm forever looking for the one computing device/screen to rule them all. Currently my 6 devices, from small to large include: smartphone, tablet, laptop, desktop, TV, movie theater screen. I've recently tried out a Meta Quest 3 that such a device (or smart glass) can replace all those devices, but in its current form has the well-known drawbacks of weight, battery life and price. Since Google is coming out with Android XR, I hope that smartphone makers can design a light, inexpensive headset that will dock a high end smartphone running XR as its computing guts. The dock could contain additional battery and worn across the shoulders, keeping the headset light and cheap at $200-$500. The smartphone would cost $1000 and can be upgraded independently from the headset. Not only would this headset replace multiple screens, it would provide many windows, AR, VR, 3D capabilities and be portable.