As large scale deportation efforts are taking place across the country, some undocumented people are living in fear. A new iPhone app, Iceblock is designed as a "warning system." Joshua Aaron is the creator of the app.

The platform, called ICEBlock, was launched in April in response to President Donald Trump’s crackdown on immigration and the mass protests that followed

Joshua Aaron has worked in and around the tech industry for around two decades. He built his first app — a blackjack game — at computer camp when he was 13.