Interest in mobile electroencephalography (EEG) is getting more and more traction in both the scientific and technological world. This technology would in fact allow the Neurosciences community to explore brain responses in a more ecological environment while a product development interest is arising for consumer products including EEG sensors. One of the most challenging part of mobile EEG technologies is the need to use dry contact electrodes. While in standard EEG the operators have the possibility to add conductive gel between the skin and the EEG electrodes surface, this is not possible when we try to bring EEG technology outside of the lab.