Open-sourced technology invented by Zimbabwean entrepreneur

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Nigeria among 5 countries that will account of growth in internet users by 2025

Zimbabwean AI expert and CEO of UK-based start-up Academy of Robotics, William Sachiti has published an open-source technology known as ‘Trees of Knowledge’ to improve access to education through smartphones in Africa.

Nigeria among 5 countries that will account of growth in internet users by 2025

This free-to-develop technology enables a tree or rural landmark to broadcast a wifi connection providing access to a pre-loaded package of educational content. The wifi connection and content comes from a micro-computer moulded into the landmark to protect it from theft or damage.

According to Sachiti, anyone within a roughly 100m radius can then access the content on any mobile device free of charge. Users can also charge their phone by plugging it into the accompanying solar-powered battery charging station.


The micro-computers will run on the power equivalent of a small rechargeable battery and can run for years without maintenance. All the user needs is a wifi-enabled device such as a phone, tablet, laptop or computer. There is no need for the phone to be connected to a carrier or any network provider, removing the issue of expensive data charges.

This project was developed to provide children with limited access to a school with education. Globally there are 258 million children out of school and UNESCO’s new report Education Progress highlights that the problem is particularly acute in Sub-Saharan Africa where the population of primary-school-aged children has doubled since 1990 and 1 in 5 children of primary school age are out of school.

However, this is also a region witnessing rapid growth in smartphone adoption. Already more than 23% of people in Sub-Saharan Africa have access to a smartphone  –  a number which the GSMA estimates will rise to 39% in the next five years.

“One of the challenges in providing education through smartphones is that, while many people have access to a basic smartphone of some description, in many areas 3G coverage is still patchy. The data costs are high for most people and in rural areas keeping the phones charged is a problem when there is limited or no electricity. Trees of Knowledge aims to address all these challenges,” says Sachiti. “There is an urgent need to improve access to education for these children”.

Sachiti believes that Africa’s burgeoning tech ecosystem can play a vital role in this collective effort – “While many programmes already exist to fix this problem, it is still not enough. With the growth of the developer community in Africa, I believe we have the opportunity to simply release the technology and let local communities build it themselves. If this technology reaches one or two more children, then I feel it would be a success.”

Edited by Jenna Delport

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