Surely...
... using this long-term ensures that brain cancer will get you first?
Scientists are touting a self-service heart monitor which transforms a smartphone into medical equipment, helping to diagnose cardio problems, while easing the fears of countless hypochondriacs. The Smartheart claims to be the world's smallest hospital-grade ECG, measuring roughly the same size of an iPhone 4. After …
... by buying an external ECG? Think the article would have been better titled "How to detect heart disease with an ECG and any old device that can display the graphs." It's not the smartphone doing any detecting here, I was expecting to read about some clever app that listens to your heartbeat on the built-in microphone.
I don't know if it's hospital grade quality, but there is a similar one to this already on the market:
BioHarness BT
http://www.zephyr-technology.com/bioharness-bt
which you can purchase for about $800 (with Software Development Kit) and it looks smaller to me than the one in your article.
Dear Sir or Madam:
It is with great joy that I tell you that the EKG your smart phone sent me conirms that you are at the peak of cardio-vascular health. However, exposure to cell phone radiation has left you with multiple tumors on your lungs. Please report to my office next week for a biopsy!