Graz University professor Francesco Greco has built on his earlier work to create advanced inkjet printed conductive polymer electrodes on tattoo paper. The composition and thickness of the transfer paper and conductive polymer have been optimized to achieve a better electrode/skin connection and improve EEG signal quality.
The cheap, user-friendly, dry electrodes have shown similar reliability to traditional EEG electrodes in clinical tests. They can be used for long-term EEG and MEG measurements as they do not contain metal.