The Tinke Finds Your Heart Rate Instantly via iPhoneS

The Tinke sounds small, and it is. But it does something pretty major: plug it into the bottom of your iPhone, press your thumb up against and it, and poof—the beating of your mighty human heart.

Who's this good for? Well it's too cumbersome to run with, but those of you with an anal attention to your health might rest easier with a better way to scan your ticker. We definitely dig any gadget that'll open a little window into the murky mess of human biology.