@0 @Billie @piegames @ryanc yeah this is exactly the kind of stuff I cover in the talk. Many people seem to be surprised this is possible. And it's going to become a lot easier. Imagine reverse image search working on all Google Street View imagery ever taken. And now add all the photos people store in their Google Drives, or have ever posted anywhere on the internet, or videos streamed or uploaded. The technology to do this exists, and the datasets, too. I'm sure this is going to happen.