<http://schema.org/description>
"A pair of new Apple patent applications published this week show potential new ways to interact with an iPhone: an unlock system that asks the user to identify a random image, and a way to identify if the current device user is wearing a hearing aid."^^<http://www.w3.org/2001/XMLSchema#string>
<http://appleinsider.com/articles/13/02/07/apple-investigating-new-question-based-iphone-unlock-hearing-aid-auto-detection>