Abstract: A composition providing electrically conductive adhesive hydrogels suitable for use as skin contact adhesives and, particularly, suitable for use as an electrical interface for disposable medical devices. The hydrogels are cationic acrylates and may be, for example, preferably made from acrylic esters of quaternary chlorides and/or sulfates or acrylic amides of quaternary chlorides. The present hydrogels are formed by free radical polymerization in the presence of water, preferably by ultra-violet curing with initiator and multi-functional cross-linking agent. The present hydrogels also preferably include a buffer system to help prevent discoloration of the hydrogels and/or hydrolysis of the hydrogels and/or improve shelf-life. Other additives may be added to the present hydrogels either before or after curing (i.e. conductivity enhancers, pharmaceuticals, humectants, plasticizers, etc.) depending on intended end-use.