This app is made for the Structure Sensor accessory. If you do not have a Structure Sensor accessory, please visit http://structure.io to learn more. Capture objects in 3D with your Structure Sensor. This simple and easy to use application allows you to capture 3D models of objects and people by simply walking around them with your iPad and the Structure Sensor accessory. Captured objects can be sent via email (uses OBJ format). Download the new "Structure Sensor Calibrator" app for best color results.