The Like button is older than you think. Well, sort of.

Back in the 1930s, Dr. Nevil Monroe Hopkins, a research engineer at NYU, had an idea: He wanted to allow consumers of the mass medium of the time—the radio—to offer feedback about the stuff they were hearing on their newfangled machines. He wanted people to be able to do what the average user of Facebook or Pandora or Instagram takes for granted today: to express pleasure at something. Or dissatisfaction, for that matter. Hopkins was looking for a way for people to vote about the stuff on their radios. Using their radios.

And thus was born … the "radiovota."

Gizmodo's Matt Novak discovered the ahead-of-its-time device in a 1934 issue of Radio-Craft magazine. It was essentially a primitive form of a Nielsen box—a box, literally, that you attached to your radio. Except: It didn't just passively register consumption habits. It allowed people to vote—actively, if primitively—on what they were hearing. The radiovota contained three buttons (Present, No, and Yes) with which people could register their reactions to songs. And possibly to more than just songs, the thinking went. As Novak notes, a 1937 edition of the Laurens Sun newspaper in Iowa eagerly awaited the day when the "president of the United States may step before a microphone, ask a question of his radio listeners concerning some question of public policy and receive an immediate reply from millions."