The challenge used the technology behind 'Samsung Smart Pause' (which when watching a video will pause when you look away) to detect when eye contact was broken. As if staring at a screen for an hour wasn't hard enough, Samsung also introduced numerous crazy distractions to make things more difficult.
Find out how people in Zurich used their eyes to win a Samsung Galaxy S4 of their own. It's inbuilt Smart Pause function means the S4 knows when someone is looking at it. The longer a participant stares at the screen, the bigger the discount is. But watch out! The game ends the moment eye contact ends. An S4 was handed out for free after 60 minutes.
Take a look below...