Scientists Working On Smart Contacts Powered By Human Tears

Who needs an external battery when you have good old-fashioned emotions?
Scientists based out of Nanyang Technological University, Singapore (NTU Singapore) have begun working on augmented reality (AR) contact lenses capable of displaying virtual information in the real world.
But here’s the really interesting part: according to an official release from the university, these high-tech contacts are powered by human tears.The team has begun development of a flexible battery roughly as thin a