Kardia Mobile ECG

It’s a little niche, but AliveCor’s Kardia Mobile ECG is still a rather impressive gadget. The FDA-cleared device is about the size of a credit card and mounts to the back of your Android or iOS smartphone. Interestingly, Kardia doesn’t use Bluetooth but instead converts electric impulses from your fingertips into ultrasound that’s captured by your smartphone’s microphone and fed into the app, producing a medical-grade ECG tracing in about thirty seconds. And while these tracings might not mean much to a layperson who can’t necessarily interpret them the device does includes automatic detection of the most common heart arrhythmia — atrial fibrillation — that’s also the leading cause of stroke.

Grab one at Amazon – $75