The Structure Sensor is a is acctually 3D depth sensing scanner that can go on to the back of an iPad and turn your iPad into a pretty powerful device.
With the magic of 3D depth sensing scanner you can measure dimension of objects and spaces pretty accurately, finding out the width of a wall, the height of a window and much more. It’s actually the perfect companion for DIYers and those who work in work in construction.
It connects to the iPad via the lighting connection but it can also be connected to other devices via USB.
To bring more functionality, The SDK is also available for developers to take advantage of the sensor and use it.