Bluetooth uses a short range radio wave to allow mobile devices like PDAs and Phones to exchange data over a secure unlicensed frequency. It's currently controlled by a special interest group, who help to develop a standard specification protocol. The first protocol was created in 1994 by Ericsson employees Jaap Haartsen and Sven Mattisson. There have been security flaws, which has led to fears that disclosure of personal data could be possible. The microwave frequencies are also the same strength of those found in mobile phones, this has led to fears of the same health risks.