Anticipating some of the privacy fears, Google said image search did not use facial recognition. But that is when things got a little fuzzy.
When it comes to the face of a well-known public figure, the service might well return a match, said Mr Singhal. And, asked if Google could identify, say, a person’s home from a picture, another Google executive said that the service would work best with images that are common on the Web.
So there is no hard line between the personal and the public here. It just depends on how often an image appears online. Over time, as Google’s technology improves and more personal information finds its way online, that will be a moving line.