The FDA approved device can be held in your hands to produce EKG or ECG readings.
Those are the tests that when done in the hospital that require you to have wires taped to your chest.
With this device and special software, a cardiologist can do preliminary tests quickly with little inconvenience to the patient.
The phone's readings are not comprehensive and if they show a problem, a full set of tests can be scheduled, according to doctors.
The device made by AliveCor is approved for licensed medical professionals.
Doctors can prescribe the case and application for their patients as well.