Dr Jerome Lewis is a British anthropologist from University College London who has devoted much of the last 20 years studying the pygmy groups who live in the forests of the Congo basin.
Dr Lewis together with the UK-based software company Helveta, Forest People's Programme, and the Cameroonian Centre for Environment and Development, are working together to pioneer the use of hand-held computers among the Baka pygmies.
Now, when the villagers go into the forest to hunt and gather, they carry a GPS on which they can record the exact location of their hunting grounds, sacred trees and important rivers.
"Before, if somebody wanted to come in and chop down one of their trees, there was no record, no proof that it ever existed on their lands. Now we have the proof," explains Dr Lewis.