Heather Dewey-Hagbor is an artist and a scientist–but her material may surprise you. She takes DNA samples from hair and other detritus is public bathrooms and recreates a “portrait” of the person who shed it. MyScienceAcademy has a great article on this artist and her work which you can read here: http://myscienceacademy.org/2013/05/05/creepy-or-cool-portraits-derived-from-the-dna-in-hair-and-gum-found-in-public-places/
While these portraits are not attached to any specific names, as Dewey-Hagbor doesn’t know from who she collects material, they still raise in interesting question of privacy. Is this an invasion of privacy even if a person’s personal information is not connected? Can we consider the metrics of a face as information that can be owned by someone? As so often happens, we as a culture don’t think about a phenomena until it has already occurred and then we make a decision. What do you think? Creepy or cool?