An eye-tracking technology under study with Pizza Hut in the UK monitors which items your eyes linger over on the menu, then suggests a custom-made pie.

According to Discovery.com, the menu is actually a tablet computer with a special built-in camera that measures your eye movements by way of infrared light. As you browse the onscreen menu of 20 different topping icons, the system registers which images you look at the most and/or the longest.

Read more on how the big pizza operators may digitalize your pizza choices.