Again, it's an excellent question.
The facial recognition technology we use is literally the most sophisticated in the world. We developed it precisely so we could protect people's privacy.
It's funny, because you can go into Best Buy or Costco and get a camera that shows where all the faces are when you look in it, so you think this is trivial technology. This is again where I go on what I've been told; this is not my own area of expertise. As I understand it, that's about 90% accurate, and it is a trivial technical matter to have 90% accuracy in terms of figuring out where the faces are. From 90% to 95% is really hard, and 95%-plus is one of the hardest computer science challenges in the world. That's where we are in terms of the accuracy of facial recognition for the purposes of blurring.
Our engineers have published scientific papers on this. We were written up in The Economist recently as one of the best examples of machine learning and how machine learning can be used for important purposes like privacy protection. We are constantly innovating on technologies like this.