In this thesis new transcutaneous electrode array technology is addressed which can overcome limitations of traditional hydrogel electrodes, enabling improved functional grasping. Conductive yarns were used to embroider electrode elements and interconnecting wires directly into garments. The perceived comfort of existing and new skin interface materials was assessed, with results suggesting that surface contact area is important for reducing discomfort during TES. The results were used to design two prototype neuroprostheses to enable improved restoration of functional grasping.