Stimpmeters languished until the 1970s, when turf-maintenance techniques began to push the limit of what grasses could tolerate and superintendents needed a tool to better monitor greens and to help keep them consistent across a course.

WSJ: Ta-Da! The USGA Gives the Stimpmeter a Makeover | Golf Journal by John Paul Newport

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