Riva Health exits stealth with $15.5M seed led by Menlo Ventures to build a smartphone app that can measure blood pressure using a camera flash (Natasha Mascarenhas/TechCrunch)

riva health menlo venturesmascarenhastechcrunch, Natasha Mascarenhas / TechCrunch:Riva Health exits stealth with $15.5M seed led by Menlo Ventures to build a smartphone app that can measure blood pressure using a camera flashA scientist and the co-founder of Siri raise millions for a stealthy digital health startupRiva, founded by scientist Tuhin Sinha