It has changed a bit in recent years, but there's still only very spotty cell service at Burning Man. Enough people can figure out how to look up a phone number that this phone still dials out thousands of times during the week.

The bigger problem for this project is because of phone spam, fewer people will answer calls from unknown numbers, so a lot of those calls go to voice mail.

Is it possible that people don’t realize you can make free calls? Perhaps they think you need coins, which they don’t have on them.

Similar to interactive installations in museums. People are afraid to touch things in museums. You really need a big sign to tell them it is the purpose to play with it.