World hunger, global warming, population displacement, human trafficking, child exploitation, malaria, mass incarceration, to name a few other ones. 
https://twitter.com/hadip/status/963802886516781056 …
Good point! I should have been clear: this is addressing one of the biggest *technology* problems of our time. (I have tech on the brain). The problem of identity has broad broad impact on commerce, on physical security and cyber security, on elections, etc