Security mechanisms for battery-free devices have to operate un-der severe energy constraints relying on harvested energy. Thisis challenging, as the energy harvested from the ambient environ-ment is usually scarce, intermittent and unpredictable. One of thechallenges for developing security mechanisms for such settingsis the lack of hardware platforms that recreate energy harvest-ing conditions experienced on a battery-free sensor node. In thisdemonstration, we present an energy harvesting security (EHS)platform that enables the development of security algorithms forbattery-free sensors. Our results demonstrate that our platform isable to harvest sufficient energy from indoor lighting to supportseveral widely used cryptography algorithmsSecurity on Harvested Power.