San Francisco-based inventor devises cheap haptic device to help visually impaired . Robin Spinks , principle manager of digital accessibility at the UK 's Royal National Institute of Blind People thinks the device shows promise . `` Tacit '' uses sensors which measure distances from one inch to 10 feet . The system is designed for people with visual impairments, but could be used by anyone who has trouble reading a map or navigating through unfamiliar areas.
San Francisco-based inventor devises cheap haptic device to help visually impaired . `` Tacit '' uses sensors which measure distances from one inch to 10 feet . The system is designed for people with visual impairments, but could be used by anyone who has trouble reading a map or navigating through unfamiliar areas.