The electronica 2006 opened in Munich, Germany and they have a wearable technologies section too.

Adidas and Atlantik Networxx present a hi-tech martial arts vest that was tested in Taekwondo already and will be market next year.

A pneumatic system measures the power of impact or the punch and a tiny sender on the back sends the data via Bluetooth to a computer who brings back the information instantly.
Up to five kicks and strokes can be displayed simultaneously.

There are other products of interest too like a tiny new microphone from Infineon using MEMS technology.

About electronica:
For four days, Munich will be staging the international electronics industry's most important event: electronica 2006. The world's leading trade show in this sector presents the entire spectrum of electronics and puts the latest trends and developments on exhibit. The event will be focusing on high-growth applications in the automotive, wireless, and embedded segments as well as in micro- and nanotechnology.