LifeBeam's heart-rate-sensing hat isn't such a dumb idea.
Black Hat 2014
It's a hat. It's a heart rate hat. Why? Well, see for yourself. Heads-on in Barcelona.
Do you want to strap a large Bluetooth band to your cranium? Yes? Then check out the Batband headphones on Kickstarter.
More socially acceptable than a helmet, the BulletSafe bulletproof baseball cap provides ballistic protection for your head without drawing attention.
Singer CeeLo Green's first new music video in two years needed to stand out. With an interactive video riffing on Google's search engine, taking a risk ended up hitting the right notes.
A fitness-tracking app called Tep challenges you to walk, run and cycle regularly to keep your adorable pet giraffe alive.
Calling all steampunk adventurers, pirates, scientists and Victorian ladies. Your outrageously large vacuum-tube-decorated wrist watch has arrived.
Technically Incorrect: A PlayStation 4 isn't small and it isn't light. Not even for the allegedly light-fingered. So is it possible to shove one down your trousers? Allegedly, yes.
Reporter's Notebook: From cars to security badges, if you build it, they will hack it at Defcon, the annual meeting of cybersecurity pros.
On Road Trip 2015, CNET peeks behind the curtain of the nighttime parade and fireworks show at "the happiest place on Earth" -- and finds innovation 60 years in the making.