Wikitude was the original before the QR Codes ... sad but BBOS had this with the 9900 and it was VERY VERY basic but the same basic premise. I've seen the 3DS have this on Nintendo with full games played through the screen. I'm pray this is NOT what Apple is going to dish out in iOS else it'll be laughing stock - EVEN with iMessage implementation like the recent iMessage add-ins effects.
Google Glass was a sneak peak to what I hope Apple is going for. I'd like a seamless and prescription lens/shade lens capable Glasses that will allow full interaction with iOS/Watch OS/TV OS with augmented reality without too much overlaying real reality. A balance if you will like what AirPod's do for wireless headsets: implementation real world use and better than what the competition offered. Safety will be a HUGE concern: iOSGlass let's call it (or anything else) while running, walking (crossing the street/j-walking), driving, operating heavy machinery, and of course the ALL IMPORTANT LEGAL clause presentation when User switches safeties off Apple NOT being reliable. Moreover Apple avoiding the issues initially faced with Augmented Reality Pokemon Go with Nantech where children found dead bodies before the police did, bating by ******s for muggins, etc that we've all read about the first month of Pokemon Go.
To be honest what made Pokemon Go so successful ... wasn't just that it had Augmented Reality ... but the ENTIRE concept and mythos of the cartoon show, the games, basically BRED the NEED for Augmented Reality to be married into such a game. I cannot imagine any other game in just about every use would benefit such a success for such a wide audience of gamers regardless of demographics, nationality, geographical location, joy of using it! Not with all those looked at: nothing compares yet ... maybe Zelda?!