I am looking into the possibility to use multiple iBeacons to do a \'rough\' indoor position location. The application is a kind of \'museum\' setting, and it would be easie
The thing that really helped me was this project on Code.Google.com: https://code.google.com/p/wsnlocalizationscala/ it contains lots of code, several trilateration algorithms, all written in C#. It's a big library, but not really meant to be used "out-of-the-box".