<http://schema.org/image>
<http://rack.3.mshcdn.com/media/ZgkyMDEzLzA0LzIyLzI2L3RvdWNoc2NyZWVuLjc2YmYwLmpwZwpwCXRodW1iCTEyMDB4NjI3IwplCWpwZw/e9794201/2f8/touchscreen.jpg>
<http://mashable.com/2012/11/09/touchscreen-history/>