Longreads

The cutting edge is in mobile and location-based technology, such as Grindr, a smartphone app for gay men that tells subscribers when there are other willing subscribers in their vicinity. Many Internet dating companies, including Grindr, are trying to devise ways to make this kind of thing work for straight people, which means making it work for straight women, who may not need an app to know that they are surrounded by willing straight men.

In the fall of 1964, on a visit to the World’s Fair, in Queens, Lewis Altfest, a twenty-five-year-old accountant, came upon an open-air display called the Parker Pen Pavilion, where a giant computer clicked and whirred at the job of selecting foreign pen pals for curious pavilion visitors. You filled out a questionnaire, fed it into the machine, and almost instantly received a card with the name and address of a like-minded participant in some far-flung locale—your ideal match.