From the gaming world, some I believed would be popular (but ended up failing) are: 1. Augmented reality. When I played around it with on the 3DS, I thought th

From the gaming world, some I believed would be popular (but ended up failing) are: 1. Augmented reality. When I played around it with on the 3DS, I thought the idea was going to really blow up and end up having a ton of games based around it. And in the first year or two, we did get a few like that. Such as Kid Icarus Uprising having said features or Spirit Camera being entirely based on the technology. But it quickly died off afterwards, and since about 2012 I don't think I've seen a single major game on the system where AR has been a central feature. Same goes with other consoles and systems too. It's occasionally been advertised (like with Microsoft and the Hololens or whatever it is), but it's generally remained a niche idea. 2. Also, the eReader. No, not the Kindle type, that thing the Game Boy Advance had in the early 00s where you could scan cards to unlock features in games. I genuinely believed that would be a huge revolution, to the point of importing the device from America to try it out. Alas, it failed pretty damn hard, and even the titles which had support for it in the US dropped said support in the European versions. 3. For non gaming stuff, VRML was a good example as well. Again, I thought the future of the internet would be 3D worlds accessed through the browser, and looked at the sites writing about it as if they were a glimpse of a high tech future only a few years off in the distance. Nope, VRML failed, and pretty much every attempt to implement VR functionality in the browser died too. 4. Also, I'm not sure if it counts as revolutionary on a tech level, but at one point there was a lot of talk about using oauth to tie various communities together into something akin to a forum network or Reddit equivalent. I think a group called Zoints tried this in the early 00s or so, and I expected their service to do pretty well off it. Again, didn't really happen. Shared login systems did, in the most basic sense (login with Facebook/Twitter/Google/whatever) but it seemed people preferred walled gardens run by large companies over individual communities networked together. Finally, there were an awful lot of Google products and services I expected to take the world by storm too. Google Wave has already been mentioned, but Google Buzz was another one too. Think it acted as a neat alternative to using Facebook comments or Diqus when it was active. But yeah, my record with tech predictions is not exactly a great one.