Leaving supplies out in the desert for all those who happen to brave the U.S.-Mexico border isn't a new concept. There are a few groups that go out and leave gallons of water and first aid supplies for immigrants but not nearly enough because, every year, people are still dying out in the deserts.
Robert Ransick created the Casa Segura project as an alternative to the situation that exists today. "Casa Segura" means "safe house" in Spanish. These safe houses contain water and food and something that differentiates it from other desert way-stations. Inside Casa Segura, the travelers will find a touch screen that will allow them to leave a message for the homeowner or the next person who reaches it. These messages are then recorded and downloaded to the Casa Segura website.
Here's the article where I first read about it:
Casa Segura article on We Make Money Not Art
And here is the Casa Segura website:
Home of the Casa Segura project