Well, this will not do away with projection, mirroring and other existing HUD technologies anytime soon. As far as I understand the featured concept, it fails to address the problem of focussing.
Having some sort of micro-LED close to the eye is one thing, but delivering useful information crisp and clear is another.
All the other problems - energy, communication, real world issues .. come after.
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.