More on Store Surveillance

The idea of doing 'visual analytics', has been growing, a new effort:

" ... Video analytics startup Prism Skylabs announced today that it has raised $15 million in Series B funding. ....  the company says it can provide graphics showing footpaths through the store, heat maps of customer interest, and customer counts and conversion. It supposedly works with more than 80 customers.... " 

Note this an example of what is called unstructured data, which often means text, but can mean other kinds of sensor acquisition, like video.