There are an estimated 285 million visually impaired people worldwide -- of which 39 million are legally blind, and 90% live in developing countries. Assistive devices and technologies, such as visual aids and other specialized computer software or hardware can increase vision and communication capabilities to advance inclusion for a population of people that might otherwise be isolated and excluded from family and community life.
Unfortunately, in many low and middle income countries, only 5-15% of those who need assistive technology are able to obtain it. This is due in part to the fact that individuals with disabilities represent a small percentage of our global population, thus there are fewer open-sourced or low-cost solutions.
When I started Braigo Labs, the the cost of a braille printer was $2000 for a basic version, making it too expensive or difficult to obtain for normal people without government or non-profit sponsorships. My goal was to build a portable, battery-charged solution that could be assembled at home with utmost ease and sell it for around $350-dollars, thus achieving an 82% reduction in cost.