Florian Rätzer joined the Center for Human Computer Interaction in January 2016. He holds a Bachelor’s Degree in Geography from the University of Salzburg and is currently studying Applied Geoinformatics at the University of Salzburg. He is involved in the Automotive Retail Lab, addressing the question of how contact-making between customers and salespeople could be improved by using modern technologies. As part of his master thesis, he is working on a new method for localizing and tracking objects within tangible user interfaces. In his approach, he equips objects with light-responsive RFID-tags and places them on a surface composed of single pixels. By running an algorithm, which turns on and off the pixels in a certain order, it is possible to locate the object on the surface as these are only activated when the underlying pixel is turned on.