[crdotson]

AR will be as big as smartphones; imagine wait staff seeing people’s orders above their heads, convention attendees seeing virtual name tags, mechanics seeing the engine details overlaid, phone repair personnel seeing the step by step instructions, me seeing arrows pointing to where I left my keys, and so forth. But it has to be on a comfort level of “wearing glasses”, I think.

[crooked-v]

I think something around the bulk and weight factor of good ski goggles (about 150g, as compared to the Quest 3's 722g and more if you want a headstrap that's actually comfortable) would be enough for AR devices to start seeing regular professional use (mechanics, plumbers, and so on) and to start showing up as mass-market media consumption/2D-game-console-replacement devices. At that point it would be comfortable enough for non-enthusiasts to wear for a few hours at a time without complaints.

[mysterydip]

Ok, if there were glasses I could put on that would in AR show me where everything I have is from the last time I put it down, as an ADHDer that would be a gamechanger. But, I also have zero faith in tech companies letting anything of that sort be private.

[JohnFen]

All of your examples except for the keys are the sorts of niche applications I think could work. But they aren't things that will make the average person want to incorporate them into their every-minute life.