
A lot of gadgetry will be shown off at the 2011 Consumer Electronics Show (CES), and this is one of them.  It's the iPhonECG, and it's a case (and app) that fits on your iPhone and turns it into a "wireless, clinical quality, cardiac event recorder."
The device records data either being held in a patient's hand or on his or her chest, via electrodes on the back of the case.  Seattle-based Allvecor has partnered with Oregon Scientific to manufacture the units.  Data is wirelessly transmitted, as well as stored on the iPhone.  The data can also be analyzed locally.
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| Willem Einthoven's ECG | 
The iPhonECG can also be used as a heart rate monitor, for uses such as biofeedback.  The company is targeting the device for both the consumer and medical markets.  
Reportedly, the iPhonECG will sell for less than $100, but that is unclear from the video, below.
Earlier this year, a health monitor 
based on an Android phone was developed by the Dutch research institute IMEC.