"Treasuremapper allows you to trigger mediafiles on a mobile phone depending on where that phone is in real space. This allows you to create spatial media experiences, often refered to as 'locative' media.
For example, you could create a detective story that requires someone to walk around town to discover clues. Taking a right turn instead of a left could have dire consequences in the story. You could create a romantic walk for valentines day in which you literally walk down memory lane. Treasuremapper was built to allow you to explore these locative possibilities.
The goal of Treasuremapper is to allow a broader group of people to create locative media experiences. Treasuremapper makes it easy to design experiences, and the software itself is open source."