Fitbit has begun shipping its wristband tracker Flex. Here's our review of how it compares with Jawbone's Up.

By pacing your breath, HearthMath's Inner Balance aims to shift your heart rhythm to keep stress at bay.

These days, you could get your genome sequenced for as little as a Benjamin. National Geographic has also gotten in the game, launching its own Genographic Project in 2005, which the company just improved with a more robust sequencing chip.

Sure, spies have charm, cat-like reflexes and an uncanny ability to seduce anything that walks, but without their gadgets, they'd have a tougher time getting out of sticky situations. While the International Spy Museum in Washington D.C. doesn't sell the infallible Cone of Silence (my favorite spy gadget of all time), it does have a nifty pen camcorder to help you get started on your next mission, should you accept it. Embedded within this $75 ballpoint pen, the MP9, is a tiny camera that can capture more than two hours of footage on 4GB of storage (up to 80 minutes on a full charge). The pen untwists into two halves: the bottom part for writing (yes, it works as an actual pen) and the top half for recording. After you're done capturing all the details of an evil mastermind's plan for irradiating America's gold supply — or something to that nature — you plug the pen into a USB port to transfer the incriminating evidence onto your computer. Novel as this might be, how does it perform in real life? We find out.