"Smartglasses allow them to use their hands to lift boxes and packages while gaining access to location data such as where to place the box within a large warehouse, or navigation data for delivering a package."
Warehouses are already organized and people know where they are putting a package. They can already navigate large warehouses because of - wait for it! - signs, labels, maps and training. You know, using their brains?!
Every article written about wearables (the latest fodder for tech journalists) is about two things - making people lazy and keeping them from doing any thinking, much less critical thinking OR about tracking so much metadata about individuals that it makes Big Brother look like a an idiot.
This is just another article hyping ideas, 90% of which will never happen due to human nature or legislation. I agree we have to dream and think out of the box, but ideas have to be grounded in reality or, like most tech trends, they never reach the goals set out by the dreamers.