Just came across this today at Slashdot: "Sub-centimeter positioning coming to mobile phones": http://bit.ly/pIvQ0e.

Apparently this is based on a technique called “SLAM”.  From wikipedia: “Simultaneous localization and mapping (SLAM) is a technique used by robots and autonomous vehicles to build up a map within an unknown environment (without a priori knowledge), or to update a map within a known environment (with a priori knowledge from a given map), while at the same time keeping track of their current location.”

I could imagine this becoming VERY interesting for high spatial resolution 3D scanning in Ecosynth- but maybe I am missing some potential limitation to this? 

Your thoughts?