[iamatworknow]

>In some settings, AR could include a density of advertising -- passive or interactive -- similar to the real world without much trouble.

Occasionally I'll watch an NHL hockey game and on certain broadcasts I started to notice large banners on the glass behind the goals and thought to myself, "Boy, you pay for seats that close to the ice and you're looking at the back of a banner ad?"

When I noticed the ad changed during the broadcast I realized that it was a virtual projection for the TV audience[0] -- a sort of AR in its own right, since it appears so seamless that I originally thought it was part of the rink.

[0] http://www.sportvision.com/hockey/virtual-advertisements