Practice in various technologies.
1. ECG based on instrumental amplifier based circuit.
2. Feeding into Arduino
3. (eventually ended up using Bluetooth from Arduino )
4. Cordova-based HTML5 Canvas Android app shoing the ECG reading

Sorry I don't have time to write all the details down. I really couldn't maintain the signal amidst all the noise fed through the breadboard, and due to traveling I had to stop the development.

Overall, I learned a WHOLE LOT in instrumental amplifiers, low-pass filters, Arduino, Android/Cordova, Bluetooth modules, and I'm thankful that I actually got it to work at least for some time during the taping of the video!
Video:
https://www.youtube.com/watch?v=wZN98gna-l8#t=13

Video showing preliminary Cordova output for browser:
https://www.youtube.com/watch?v=2FeuwNbrZmc

Cordova app on Android visualization test:
https://www.youtube.com/watch?v=1TkkkymwBAM