The campaign has teamed up with charity Arrhythmia Alliance which helps place defibrillators (AEDs) in communities.

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AEDs are approved by the Food and Drug Administration and available as an over-the-counter device for home use.

FORBES: STOP a heart. SAVE a life.

King County has about 3, 000 AEDs in public locations registered with 911 dispatch.

WSJ: This Device Saves Lives, But Can Be Hard to Find

Only 24 passengers were in cardiac arrest, and the AEDs, which evaluate the patient's condition, delivered shocks to just five.

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The result: a map pinpointing the location of more than 1, 400 AEDs in 500 buildings in nearly every ZIP Code in the city.

WSJ: This Device Saves Lives, But Can Be Hard to Find

As of January 2012 there were a total of fifty six state bills pending or recently passed which specifically relate to AEDs and Cardiac Arrest.

FORBES: STOP a heart. SAVE a life.

The app provides them an interactive map view that indicates their present location, the incident location where the patient is located, and the location of all nearby AEDs.

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They enlisted residents of Philadelphia in a crowdsourcing project, with an incentive of cash rewards, to hunt down as many AEDs in the city as they could find.

WSJ: This Device Saves Lives, But Can Be Hard to Find

While reliable data are scant, of the estimated 225, 000 reports each year of people collapsing of sudden cardiac arrest, some experts estimate AEDs are generally used to help fewer than 5% of victims.

WSJ: This Device Saves Lives, But Can Be Hard to Find

AEDs are widely considered an important public-health tool.

WSJ: This Device Saves Lives, But Can Be Hard to Find