Sentence:  When used in this manner, proximity technologies are said to be providing <WSD>micro-location</WSD>, because they can provide much more accurate information than GPS, especially in buildings where GPS does not operate with high accuracy (or possibly even at all). In a <WSD>micro-location</WSD> scenario, proximity can operate as a tighter description of where you are, but that misstates the power of proximity. 
Meaning of the word marked with <WSD> tags:  (uncountable) The process of electronically determining the location of something with a level of precision that locates it within a building or room.