I love the idea of juxtaposing real world location and invisible data. There used to be an app that allowed to tag and write things on wall. It's of course onl

I love the idea of juxtaposing real world location and invisible data. There used to be an app that allowed to tag and write things on wall. It's of course only visible when you are on the spo. I am huge believer in the coming of time and location restricted layering of data/art/app.