Created by Northwestern University in Illinois students Eunice Lee, Matthew Zhang, and Bomani McClendon, the Waves project is capable of recording people’s spoken responses to personal questions, printing them as sound waveforms on a receipt paper. Designed for fun as a side project, Waves is, in fact, a device based on the powerful Raspberry Pi 3 single-board computer, which comes built-in with Wi-Fi and Bluetooth, a thermal receipt printer, a standard USB microphone, and a total of four tactile buttons.