Leap Wireless owns Cricket, a small prepaid carrier in the U.S. that recently started selling the iPhone. In fact, Leap was the first pay-as-you-go carrier in the U.S. to start selling the iPhone at full price. Now other prepaid carriers like Virgin Mobile have also picked up Apple’s handset.

In recent months, Leap hasn’t been very thrilled about how many iPhones it’s selling.

T-Mobile USA will finally start selling the iPhone and enforce its plan to eliminate subsidies in “three to four months,” according to the company’s chief executive, John Legere. It will be the first time T-Mobile has offered in the iPhone in the United States since the handset was first released launched in 2007.

Researchers in the UK have put together a prototype wrist-worn sensor that turns your own hand into a 3D movement controller for almost any device you can think of.

Experts from Newcastle University and the Cambridge-based Microsoft Research used off-the-shelf parts to assemble a sensor that straps to your wrist and detects movement of your arm, hand and fingers. There’s no need for any external sensor, nor for line-of-sight to the device you’re controlling. Everything’s done using the technology you wear.

Here’s a video that explains more.

Leap Motion‘s worldwide call for developers “to imagine and create the future” has resulted in a virtual stampede of interested parties applying for the Leap SDK, which will allow them to make apps using Leap Motion’s revolutionary 3D motion tracking technology.

Leap Motion is a San Francisco company developing the world’s most powerful and sensitive 3D motion-control and motion-sensing technology. Leap Motion’s first product, the Leap — featured with an exclusive hands-on video demonstration on Cult of Mac last month — will be available in early 2013. The Leap is the first product to let users navigate and interact with computer applications using natural hand and finger movements. Founded in 2010 by Michael Buckwald and David Holz (pictured), the company aims to revolutionize the way we interact with our computers.

Believe it or not, there are over one million iPhone users in the United States who cannot access 3G networks because their carrier of choice is T-Mobile. Apple’s smartphone isn’t officially available on T-Mobile right now — because the operator’s unique 3G network isn’t supported by the handset’s wireless chip — but people choose to use its 2G network instead.

That situation will change for the new iPhone, however, because T-Mobile has announced it will launch a new LTE network next year.

There has been rather a lot of interest recently in the 3D motion sensing device Leap by San Franciscan company Leap Motion. While the company CTO was somewhat reluctant to talk about The Leap’s modus operandi / camera / sensor, he was more than happy to give Cult of Mac a demonstration of Leap in action. Watch the video here.

Imagine that you could buy a tiny USB-powered box that detected your motion like Microsoft’s Kinect, only instead of watching you jump around a room, it watched your hands and fingers. Imagine that the box was sensitive enough to track the tip of a pencil tracing out letters in a 1cm square of space, and to turn that into accurate handwriting on the screen.

Amazingly, that box is available for preorder right now. It’s called the Leap, and it works with your Mac.