Braille system has many users in country, but some argue that visually impaired would be better served by technology.
Two engineering graduates in India have invented a device that improves communication for speech- and hearing-impaired people.
The prototype interprets sign language and translates it into words by turning finger movements into signals that are then vocalised.
The designers of the device are optimistic that it will take off.
Al Jazeera’s Divya Gopalan reports from Mala in Kerala.