Content Idea of Asia Co. has developed a printable 3D code that can store between 0.6 to 1.8 MB, enough for watching short video commercials on mobile phones.
The 3D code is based on the 2D QR Code (photo). See an explanation on Wikipedia.
Content Idea of Asia Co. calls it PM Code. The PM code consists of up to 24 layers using different colors.
A usage example is for instance to watch a commercial on a mobile phone scanned from a perfume ad in a magazine.The software to read the PM Code will be free. First 3D Barcode video ads should come this Summer in Japan.
More details on Nikkei.Net (Subscription). See also the Content Idea of Asia site (Japanese).