Specifically for this study, the investigators are asking each participant, all surgical trainees, to explore four phantom kidneys with stones added and count the number of stones. For each kidney phantom, the participants will have either one of three augmented reality markers to show where an expert is looking, or they will not have any visual guidance (standard of care). In all cases, the participants get verbal feedback from the expert surgeon. The goal is to compare the effect of the design of the AR marker on the trainee's performance in exploring the kidney phantom.
