They say the eyes tell all. Now thanks to eye-tracking technology we can tell they're saying. Tracking eye movements can give us fascinating insights into
We've picked out some of our favorites below:
Everyone focuses on Scarlett Johansson's face in this Dolce & Gabbana ad. Here you can see how the eyes follow a few different animations.
![scarlett johansson ad](https://static-ssl.businessinsider.com/image/53ce61e16bb3f7dd693ffa82-800-528/sdfvsfuntitled-1-3.jpg)