From a New Scientist article I learned about Traсes. Traces lets you leave a bundle of information (like a song and some greetings) for someone at a particular GPS location (and at a particular time.) You can thus use it to add gifts for other people to find. It strikes me a neat use of augmented reality. I can imagine all sorts of uses for it beyond gifts:
- One could use it to leave information about a place.
- It could be used by artists to leave AR works as imagined by William Gibson in Spook Country.
- One could create alternate reality games with it.
Alas, it is not available in the Canadian App Store.