The idea is to build a mobile tool to collect data through toilet ID mechanism to identify, track, and resolve problems around latrine maintenance in schools (or other public latrines).

FORBES: Why Toilets, Not Cell Phones, Are Key To Education Around The World

Google in late 2007 launched Content ID, which helps identify copyrighted material so content owners can block the content from appearing on the site altogether, or in certain geographical markets.

WSJ: Illegally Uploaded Movies Crop Up Again on YouTube

In the remoter corners of the Andes, textiles have been the clues used to identify exhumed human remains where ID documents are a rarity.

BBC: Scarf of Hope to remember Peru's missing