Basically, this sonar system will turn images into sounds thanks to a clever combination of a video camera that has been embedded in a pair of eyeglasses, alongside a laptop for processing purposes and a pair of headphones. Someone will need to go through approximately 70 hours of specialized training beforehand so that they can identify the different kinds of shapes transformed into sound. Once the training period is over, the blind person could end up being extremely adept at perceiving information, including the location of a person in a room, as well as reading words and letters.