MultiLayerInteraction

Placing your phone horizontal and vertical will give you different views. You can explore different layer images of the object by moving your phone up and down. In addition, if you hold it in vertical plane, by pulling and pushing your phone, you can also view different layers images in that direction as well.

For the research paper described a little bit more details, please refer to:
Multi-Perceptive Multi-Layer Interaction in Mobile Devices
Maryam Khademi*, Mingming Fan*, Hossein Mousavi Hondori*, Cristina Videira Lopes (*: contributed equally)
UIST'13 Adjunct: ACM Symposium on User Interface Software and Technology (poster).