The technology featured on this site is itself not patented, nor patentable, nor protected in anyway. So feel free to build these machines for whatever purposes. However, the content of this website (texts, images, etc.) is protected from commercial use under the Creative Commons Attribution-Noncommercial-Share Alike 2.0 license or copyright where mentioned. So feel free to use the material for non-profit purposes, and contact the authors for profit uses. Why is it the technology free? (...)