Privacy stalwart Nicholas Merrill spent a decade fighting an FBI surveillance order. Now he wants to sell you phone service—without knowing almost anything about you.Photographs: Yael MalkaNicholas Merrill has spent his career fighting government surveillance. But he would really rather you didn’t call what he’s selling now a “burner phone.”Yes, he dreams of a future where anyone in the US can get a working smartphone—complete with cellular coverage and data—without revealing their identity, eve...