The man who invented the PGP (Pretty Good Privacy) is working on a similar project for Internet phones.
OVER-THE-TOP phone bills are leaving plenty of Australians in debt, and many are turning to the Telecommunications Industry Ombudsman (TIO) for help.
Niklas Zennström, the internet entrepreneur behind both Kazaa and Skype, spoke to BBC Click Online about how his two inventions came about, and how broadband and wireless devices are shaping his vision for the future.
BT has unveiled a mobile phone that uses Bluetooth and VoIP technology to automatically connect to a landline when used at home.
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