The idea is to create intelligent clones of our personal identity to be used by network services that collect data on our habits.
The system works by creating several clones of our personal profile, and merges our real data with false data to generate data that simply approximates our real habits. The web pages take this fake data, protecting our habits and our identity. Perfect for those who are most afraid of the advertising services on the net.
As a result, the data that some online advertising services would take would no longer be reliable , complicating things for those who have no shame in collecting the habits of all users in order to refine the ads they will see in the future. At the moment it is a patent, so we might never see it, or see it as an advantage in Safari, or perhaps Apple will use it internally among its employees. But it certainly looks like a good way to protect our privacy.