Digital technologies already have revolutionized how the deaf communicate, but face-to-face conversations with hearing people who don't know American Sign Language can still be challenging, said Adele Peters at Fast Company. Uni, an "automatic translator" gadget that attaches to a basic Windows tablet, helps deaf users converse without having "to hire an expensive interpreter or resort to writing or typing notes." (Colin Pattison Photography & Cinematography) The device uses two cameras to watch someone sign, then translates those gestures into English, "speaking in a Siri-like voice." When the hearing person responds, Uni's speech recognition software automatically types the words on the tablet for the deaf user to read.