article_snippet: Using facial recognition technology, a public experiment will monitor the reactions of 150,000 visitors as 150,000 visitors look at different plants at the Chelsea Flower Show in
article_snippet: May. Happiness test: Using facial recognition technology, a public experiment will monitor the reactions of 150,000 visitors as 150,000 visitors look at different plants at the Chelsea Flower Show in May (file picture)
article_snippet: Cameras will monitor eye contact, physical gestures and facial emotions to gauge visitor reaction to each plant.
highlights_snippet: Experiment will be carried out at the Chelsea Flower Show in May .
  Using facial recognition technology
highlights_snippet: the Chelsea Flower Show monitor reactions of 150,000 visitors .
  