For marketers, TVs act as priceless sets of eyes

New York

WHILE Ellen Milz and her family were watching the Olympics last summer, their TV was watching them.

Ms Milz, 48, who lives with her husband and three children in Chicago, had agreed to be a panellist for a company called TVision Insights, which monitored her viewing habits - and whether her eyes flicked down to her phone during the commercials, whether she was smiling or frowning - through a device on top of her TV.