TelethoniX is a project made in 48h during Telethon hackathon. The project combines software and a hardware to create a simple prototye to mesure heart beats and send an alert to a supervisor (or family member) mobile device in case heart stop beating.
The project's code is composed of an Android application, a simple Google AppEngine server, a Raspberry PI python script, and an Arduino project.
More details and picture at the project blog.