Introduces thermoelectric conversion cells into the skin that harvest the temperature differential between body heat and ambient air to generate a small but continuous electrical current. The user becomes a biological battery — capable of charging small electronics through skin contact, powering low-draw devices, and in extremis, providing emergency power to medical equipment. Output is modest: approximately 2–5 watts in normal conditions, spiking to 10–15 watts in cold environments where the thermal differential is greatest. Zheng-Dao Bioelectric developed the modification for field workers in remote areas where charging infrastructure is unavailable. In the Shelf, where electricity is unreliable and expensive, Power Skin users charge their neighbors' devices for small fees — a living power grid, one handshake at a time.