Â鶹Éç

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Mobile coverage, where everyone has a handset, controlling the skies, hacking. Capetown is hosting a mobile phone conference and in Botswana every other person has a phone; in Africa the mobile phone is being heralded as a life-saving and enhancing tool. A look at the technology that helps guide planes in a crisis. This is a programme from the Â鶹Éç World Service Archive and was originally broadcast in 2006.