When it comes to online advertisement , I'm pretty sure that you are familiar with phrases like: Pay per click, pay per referral, e-mail pays you, pay to read e-mail, pay to send e-mail, pay per survey and etc. I bet you've not heard of pay per gaze, yes. Because its the newest way of paying, and earning money online through advertisement. Google has graciously made this available.
Google has filed and been granted a new set of patents which includes a proposal to use eye-tracking technology to create “pay-per-gaze” advertising. The patent information shows a Google Glass-like device that registers when individuals look at an advert before charging the relevant company. The technology, seen by The Verge via Phys.org, could also detect individuals’ “inferred emotional state information” by measuring pupil dilation.