Brazilian laws prohibit outsiders from contacting remote Indigenous tribes in the Amazon, but that hasn’t deterred some Christian missionaries. First reported by The Guardian and Brazilian newspaper O Globo, the secretive project has alleged ties to multiple international evangelical organizations. Brazil is home to the world’s largest concentration of uncontacted and isolated Indigenous communities. An unsolicited MessengerAn example of one of In Touch Ministries’ Messenger devices, seen in a promotional video. Popular Science reached out to representatives from MegaVoice and In Touch Ministries, including Seth Grey, for comment.