Augmented realityiPhone 3GS / 4

Video source: http://www.youtube.com/watch?v=Ijoiy4Heoqk

Accuracy of the calculations when processing the visual data from the camera – more reference points require more resources from the processor.

Technological experience of the client – users with less experience with such devices would be unwilling to conduct such surveys.

The different types of questions and applications of the technology is limited only by the imagination.