Another easter egg at Fujitsu's CEATEC booth was a system for transmitting coupons, URLs and other digital information from a TV screen to a user's smartphone. We'll back up a bit: the data ends up on-screen in the first place thanks to information embedded in light flashing at various levels of brightness (the frame rate is too quick to be detected by the human eye). Theoretically, when a viewer is watching a commercial, they'll see a prompt to hold up their phone's camera to the screen, and doing so will bring up a corresponding coupon or website on their handset. The embed
