It is estimated that death from a sudden cardiac arrest is the leading cause in countries like USA and Canada. The survival of such patients depends mostly on immediate care being taken of them by the spectators or by-standers during out-of-hospital cases. But it is seen that most of the by-standers lacks the requisite knowledge in the life-saving techniques and because of such ignorance the victim loses its life. One of the most important life-saving techniques is CPR which mainly involves chest compressions and rescue breathings administered to the victim at the ratio of 30:2. Most cardiac arrests are caused by lethal heart arrhythmias which can easily be reversed by providing the victim with a single shock to its chest with an automated external defibrillator and CPR can help in the process of successful defibrillation. People might not be having knowledge in how to use AED'S but AED'S are mostly designed in such a way so that the general public can use it smoothly. AED&#