More geekware

I've already talked about all kinds of geekware before, but this one sounds more interesting.

How about using QR-coded clothing to disguise what you want to say to the world and let only a few people to actually know what you're "saying"?

The Space Invaders-themed scarf shown in the picture on the left is a great example of QR-code based geekware.

Want to know what's this lovely girl's message? Well, install a QR-code reader on your cellphone and you'll be able to read it :-)