Supermarket chains have lab stores observing shoppers' behaviour

By Neil McMahon
Updated March 23 2014 - 2:08pm, first published 3:13am
A Coles store at Southland. Photo: Meredith O'Shea
A Coles store at Southland. Photo: Meredith O'Shea

When it comes to the modern supermarket, some shoppers matter more than others.