Artist Heather Dewey-Hagborg
’s “Stranger Visions” project started with a question: What could she learn about a person by collecting one of their stray hairs? In an age of ever-cheaper DNA sequencing, the answer turned out to be “a lot.” Dewey-Hagborg’s portraits of strangers, made with DNA samples found in public places, called attention to the feasibility of DNA snooping. Now with her latest project, “Invisible,” she wants to put the tools to protect genetic privacy in consumers’ hands. But is total genetic privacy really possible?