But it's still unclear whether wearing the device is truly legal while driving.
The age of practical facial recognition has begun, and it's only going to get more precise.
Customers now use mobile phones to do everything from depositing checks to paying bills.
Meet the "Crittercam."
"We started getting these letters."
The nano-turbines are so small that hundreds could fit inconspicously on a phone's sleeve.
A conversation with Smart Cities author Anthony Townsend.
Soon, you'll be able to get one for your apartment. And in a couple of years, they could be used to light our streets.
Hint: It's not cars.
Researchers studying the shape of our social networks make some startling findings.
China's most comprehensive on-the-ground photography yet.
You know how sometimes you can see yourself in the eyes of another person? Others can see you, too.
2 ideas for the company's busiest times.
Which cities attract the most people, and what kinds of communities are losing them.
And many of those who do are planning to stock up on 40 and 60 watt bulbs.
These impressed us for both what they illustrated and how they did it.
But merely providing the service isn't enough. It needs to work well, too.
At the very least, it gives parents god-like knowledge of their teen's driving habits.