Fujitsu demonstrated a new technology at CEATEC 2012 in Japan that could be an alternative to QR codes on TV. The system embeds digital information on the screen in the form of light flashing at various levels of brightness, which is imperceptible to the human eye.

This information (such as URLs, coupons, and other data) can be transmitted from the TV to a viewer’s smartphone. When they’re watching an advert, they could see a prompt to hold their phone up to the screen from up to 2-3 meters away for a few seconds, which would transmit a corresponding coupon or bring up a relevant website on their mobile device.

Fujitsu

Photo – House of Japan