This shirt was developed by a joint venture between GEO View and FALKE KG of Germany.
According to the GEO View web site:
The incorporated high-tech foil measures the cardiac rate by means of two sensors providing the ECG. No annoying cabling and adhesive electrodes are required. In connection with a breathing fiber the ECG-shirt offers to the user the highest comfort.
The recorded ECG data are transmitted directly from the foil to the mobile telephone, through a bluetooth connection. In the mobile telephone, data can be stored or immediately forwarded to the medical Service Center for analysis. On the other hand, the Service Center may also retrieve the latest ECG data for analysis within individually agreed periods of time.
From professional use for medical exertion checks on top sportsmen to an accurate pulse measurement on the leisure time sportsman this ECG-shirt offers a wide range of use.
(via Far From Perfect)