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A Kenyan-built artificial intelligence tool is attempting to make everyday movement safer and more independent for people with visual impairments by helping users identify obstacles as they navigate Nairobi. The platform, called Sightra, combines artificial intelligence, audio guidance and GPS navigation through a web application that can be accessed on a smartphone.
It is being developed by Kenyan founders Ruth Nzuki and Brian Gillo as an assistive navigation system specifically designed around the realities of African infrastructure. As users move, the system uses AI-powered object detection to identify obstacles in their path. That information is then converted into speech and relayed through an earpiece. GPS technology helps guide the user from a starting point towards a destination.
The technology does not replace a mobility cane. Instead, it is intended to provide an additional layer of information about obstacles that may be further ahead than a cane can immediately detect. Lawyer Julius Mbura, who has a visual impairment, has been testing the system while moving between his car park and office in Nairobi. He said the real-time audio descriptions help him identify obstacles including parked vehicles and trees. Mbura described the technology as promising while also noting that improvements are still needed in its accuracy and descriptions. That willingness to identify shortcomings is important because assistive technologies need to be reliable enough to support real-world movement.
The Nairobi environment creates particular technical challenges. Walking routes can include open drains, missing kerbs, broken surfaces, crowded spaces, parked vehicles and sudden changes in the physical environment. The Sightra team says its AI models have therefore been trained and tested around Kenyan infrastructure instead of relying solely on environments with smoother roads and more predictable pedestrian routes. That local focus could prove particularly significant. Technologies developed elsewhere can fail when they encounter environments different from those used during training. Designing AI around African conditions gives local developers an opportunity to build solutions better suited to the problems experienced by African users.
Kenya’s 2022 Demographic and Health Survey reported that around 2 per cent of people aged five and above had some difficulty seeing. Developers say Sightra is already being tested through partnerships with schools serving visually impaired students as well as individual users. The service uses a subscription model costing $100 annually, although the first six months are currently free. Affordability will remain important. An innovation can only expand independence if the people who need it can access the technology and if the system performs reliably in everyday settings.
There is also a wider policy question. Technology can help users navigate inaccessible streets and buildings, but it does not remove the responsibility of governments and developers to make infrastructure more accessible in the first place. Kenya’s National Council for Persons with Disabilities has acknowledged that roads, buildings and other parts of the physical environment remain difficult for people living with disabilities.
Sightra represents the kind of innovation that becomes possible when local developers begin with local problems. African technology does not always need to imitate products built elsewhere. Sometimes its greatest advantage comes from understanding the street, pavement, drain, building or community that global developers never designed for. Sightra is still developing, and its creators acknowledge that more work is needed. But that is how useful innovation grows. It begins with a real problem, a locally informed solution and the belief that technology should expand independence rather than leave people behind.
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