Psychological ownership of Information Technology (POIT) is becoming an increasingly relevant phenomenon in theory and practice since privately-owned consumer technologies and bring-your-own-device (BYOD) strategies effectively shaping today’s workplaces. While Information Systems (IS) research is in the beginning to explore POIT, the full complexity of the ownership phenomenon has not yet been understood. Here, we draw on psychological ownership theory to propose an extended view on POIT. Choosing a grounded theory methodology, we gathered original data (20 expert interviews, 5 and more years of work experience) and discovered “Appreciation of Technology” as a key characteristic of psychological ownership which has not been considered so far. Additionally, we identified three new antecedents (“Freedom of Choice”, “Multi-Context Use” and “Surveillance”) and one new effect (“Exception Handling”) of psychological ownership of IT. Along with previous studies, our extended view provides a new lens through which ownership and technology acceptance can be viewed and BYOD phenomena better understood. Based on these new insights, we derive several implications for theory and practice.