Via an ear clip, the MOODY® device measures excitement, while a light indicates ist color/level. The scale goes from blue (low excitement) to red (high excitement). With the data of people's excitations and mutual distances, algorithms are developed to visualize and even stimulate the "energies between people". At the workshop, devices can be built, algorithms upgraded and tested, and the jewel embodied as we interact with others. Topics on the device manual can be added, and user policies discussed.