Listening / Form Completion / PART 4

                     Methods of Promote Sales of Super Market Products

(1) _____________which provides information from customers about their views on displayed products.

(2) _____________that films the customer as he shops and monitors his physical movement.
A more sophisticated technique includes devices
Like (3)_______________
Using a particular program called (4)_______________
Which tells the retailer which products sells best in
  Which part of the store?
In also suggests the most profitable combination of

  An article and (5)__________________in the store.