Rresearchers of the Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP have recently developed a miniaturized phosphorescence sensor that combines a marker and sensor on very small chip surface that could be produced at low cost in the long term. They will present the first prototype of the sensor, which is currently designed for oxygen ratio monitoring, at embedded world 2019, 26-28 February in Nuremberg, Germany, at the Fraunhofer Joint Booth in Hall 4, Booth No. 4-470.