Reinventing old Technology: I just started a business

In short customers are buying a postcard for a digital wallpaper that sender and receiver can obtain via QR code?

Not sure this would drive up postcard sells for a couple initial reasons: 1. Any postcard company can do this 2. It still has to be mailed. Not sure this would compete against Photogram.

Perhaps if one could record a video of their destination using the iPhone, upload content via an app where the card could be customized. Card would be printed and mailed with my QR code that linked to video. Tis would be a little cooler.

GOod luck.