Someday, microbial cyborgs—bacteria combined with electronic devices—could be useful in fuel cells, biosensors and bioreactors. But first, scientists need to develop materials that not only nurture the microbes, but also efficiently and controllably harvest the electricity or other resources they make. Now, researchers reporting in ACS Applied Materials & Interfaces have developed one such material that enabled them to create a programmable "biohybrid" system that conducts electrons from electricity-producing (exoelectrogenic) bacteria.