"NON-BATTERY: Thermogenerator tech could power 'smart clothing"
German semiconductor giant Infineon Technologies AG is developing thermogenerator technology to power the microelectronic devices that it expects to go into 'smart clothing.' Infineon's thermogenerator uses the temperature differential between the human body's surface and the clothing a person is wearing to generate electrical power.

Story in EE Times: http://www.eet.com/at/news/OEG20020507S0012