<http://schema.org/caption>
"The Samsung Galaxy S IV will reportedly let customers scroll through text using only their eyes (eye image: &lt;a href=\"http://www.shutterstock.com/cat.mhtml?lang=en&amp;search_source=search_form&amp;search_tracking_id=227EF6C0-8507-11E2-B753-65BF37D0D1A0&amp;version=llv1&amp;anyorall=all&amp;safesearch=1&amp;searchterm=eye&amp;search_group=&amp;orient=&amp;search_cat=&amp;searchtermx=&amp;photographer_name=&amp;people_gender=&amp;people_age=&amp;people_ethnicity=&amp;people_number=&amp;commercial_ok=&amp;color=&amp;show_color_wheel=1#id=111031658&amp;src=2E538380-8507-11E2-8232-94BF37D0D1A0-1-49\" target=\"_blank\"&gt;Shutterstock&lt;/a&gt;)"^^<http://www.w3.org/2001/XMLSchema#string>
<http://newatlas.com/galaxy-s4-eye-tracking-technology/26503/>