Twenty years ago Pieter de Villiers and his co-founders came up with a tech innovation that was a world first. It literally went on to change the world of digital technology. They launched the company Clickatell which now has offices around the world, including Silicon Valley, although most of its developers still sit in Cape Town. Apart from being a successful South African tech entrepreneur, Pieter has worked really hard to encourage and develop local innovation and entrepreneurship. He is also working on an initiative to grow digital skills in South Africa.