Luis Guerra

9 Added | 3 Magazines | 3 Likes | 2 Following | @guerraluis | Keep up with Luis Guerra on Flipboard, a place to see the stories, photos, and updates that matter to you. Flipboard creates a personalized magazine full of everything, from world news to life’s great moments. Download Flipboard for free and search for “Luis Guerra”

For $1, you can build a device that uses TV signals to recognize gestures

Advertisement<p>5 Comments<p>Credit: University of Washington<p>There’s energy all around us in the form of TV, radio and WiFi signals. Develop a device that …

How Google Used Motorola To Smack Down Samsung -- Twice

Samsung is giant. It employs 427,000 staff, has an annual turnover in excess of $270bn and assets of $600bn spread across over 80 business units. And Google just floored it twice using Motorola as a baseball bat.<p><b>Why?</b><br>On the surface having 81 per cent of Android marketshare would seem to make Google …

Should Math Really Be A Required Subject?

The novelist Nicholson Baker makes a case against algebra<p>Nicholson Baker hates math.* The novelist and nonfiction writer spends almost eight pages of this month's <i>Harper's Magazine</i> making the case that compulsory algebra courses in American education are at best, wrongheaded, and at worst, downright …

Chromecast review

Did this $35 dongle just make Google a player in your living room? We think so<p>Chromecast came out of nowhere and got a lot of people excited about …

How to block a phone number on your Android phone

Keeping in touch with family and friends has become easier and faster thanks to our Android smartphones. However, not all people who can contact us through our mobile phones are people that we love and cherish. Some are spammers, annoying strangers, telemarketers, or other unwanted callers. You …

Apps

Edge, Jump, and Next: the "opt out" shell game, and how to win.

Digital Trends<p>Save for Sprint, every other major US carrier has some sort of “opt out early” plan. T-Mobile kicked things off with their “Jump” offer, which was followed by AT&T’s costly “Next” scheme. Verizon was late to the game, but had a very fair showing with their “Edge” plan.<p>Where do we go …

T-Mobile

Back To Basics: Screen technology explained

This week’s edition of Back To Basics is going to focus on the part of your device that you’re spending almost all your time looking at. It’s time to talk screen technology.<p>No two displays are the same, but there are a few guidelines that can help you choose the right screen for you. From the …

Phones

3D-printed pinhead battery could power robots

One of the smallest batteries ever, this tiny lithium-ion can store enough juice to power tiny robots or medical implants.<p>We've seen some very sophisticated 3D-printed objects recently, but never a tiny 3D-printed battery -- one that's as small as a grain of sand, no less.<p>A group of U.S. and Korean …

Clean Energy

How mobile phones are making cash obsolete in Africa

When he rolls into a gas station to fill his tank, Barkhad Dahir doesn't get out of his car. He punches a few buttons on his cellphone and within seconds he has paid for the fuel.<p>With the same quick keystrokes on his phone, he pays for virtually everything he needs: groceries at the supermarket, a …

Africa