After slipping the device on, the user just runs an index finger below the printed text in a magazine, on a business card, or on a menu, for example. A small camera scans the words and the device reads them out loud in real time. Audio cues and a small vibrating motor alerts the user if he or she needs to move to the next line or has veered from the line of text.
Details about FingerReader can be found in this paper [pdf], and here’s a video of how it works:
Finger Reader Wearable Text Reading Device from Fluid Interfaces
FingerReader is a lot like “reading with the tip of your finger,” MIT’s Pattie Maesexplains to AP. “It’s a lot more flexible, a lot more immediate than any solution that they have right now.” Compared with other text-reading solutions, FingerReader works with a simple, familiar gesture of the finger and offers real-time feedback on the progression of the scan.