What to say. Amazing stuff.
And in advance, they haven't released the APK yet to protect their research.
The Computer vision and geometry Group of the Swiss Federal Institute of Technology in Zurich (ETHZ) developed an app that uses your cellphone camera to make 3d scans on the go. The nice thing, all the calculations are made on your device, so you're able to see if your scan was good enough to reconstruct the model. It also allows to change perspective of the scanning to get cavities and such.
What more to say. Watch the video, visit their page.
Personally I can't wait to try the app.