Blind People's Ability to 'See' Through Sound and Electro-Tactile Grid

Blind people can develop the ability to understand their surroundings based on what they hear/nThe Voice is a program that can convert what a phone camera sees into sounds/nThe Voice app allows users to experience the world through sound/nScientists have conducted experiments on sensory substitution approaches/nSensory substitution can also be done through the tongue using an electro-tactile grid