Radcliffe, with Dratch, is a depressed scribe whose life is overtaken by social media.

DON’T BE SURPRISED IF you feel an irresistible urge to throw away your cellphone upon exiting Privacy, the play starring Daniel Radcliffe being presented at The Public Theater. An exploration of the insidious manner in which technology has invaded our lives and made every aspect of our existence accessible, the drama is not merely disquieting but frighteningly alarming. Its revelations would be even more unsettling if it weren’t so damn funny.

A co-production of the Public and London’s Donmar Warehouse (where it received its 2014 world premiere), James Graham’s play depicts the travails of a lovesick British man (Radcliffe), known as “The Writer,” who’s seriously depressed because his lover broke up with him and moved to New York City. He visits a psychiatrist, who encourages him to use social media to reenter the dating world. He then decides to relocate to the Big Apple in hope of starting over and possibly winning back his ex.