Yes, although it’s primary purpose is to help you figure out who owns the right to an image you might want to use. Google apparently has some excellent facial recognition software they are not fully implementing because it scares people.
Combined with their new google glass eyewear, it is thought that Google could provide you a way to walk down the street and identify half the people you see.
You can easily play with it. You get two browser windows. In one, pull up any image. In the other, go to google.com, and select images. Now, at the far right of the search bar in google, there’s a camera. This is the wild part. Move your cursor to the image in the other browser window, left-click and drag it to the search bar, and drop it. Google will find everywhere that picture shows up on the internet, and then will also try to pattern match recognizable features in the picture with other pictures.
I tried it, that is wild! Now I’m all paranoid of all the photos of myself I uploaded from the past like umpteen years lol. That is amazing I had no idea about this stuff thanks!