During the mid-‘90s, cardiologist and researcher David Albert had the idea to develop a handheld device that displays an electrocardiogram. He believed that this would save lives by providing immediate information to patients wherever they were. In those days, even the most powerful handheld computers didn’t have the needed capabilities. So Albert dropped the idea because it was impossible.

And then came the iPhone in 2007 — which has more processing power than some of the supercomputers of yesteryear. In 2010, at the age of 56, Albert started Alivecor with $250,000 from his savings. His goal was to build an iPhone case that performs an EKG. This device was approved by the FDA last December and now retails for $200—with a prescription.

To read the original article: .@wadhwa: Debunking the Myth of the Dorm-Room Billionaire - The Accelerators - WSJ