Sensor based products can assist the visually impaired with mobility, and continue to be released in various forms and at different price points.
Samsung’s ultrasonic cover for the Galaxy smartphone sends alerts through a vibration or TTS feedback. The user holds the cover in front of him/herself, and it senses the presence of a person or object up to 2 meters away.
Indian Institute of Technology researchers have created an affordable, ultrasonic SmartCane. The device detects objects in its path, up to 3 meters away, and generates vibrations that differ according to the distance of the object.
Companies such as I-Cane have added navigation systems to sensor based walking aids.