The Effect of Elbow and Shoulder Supports on Detection Threshold of Hand Redirection

Hand Redirection (HR) techniques subtly alter a user ’s real hand movement to deviate from its virtual representation, enhancing passive haptics in virtual environments. However, noticeable discrepancies can reduce immersion. Inspired by redirected walking research demonstrating that knee supports can influence the perception of manipulation, this study explores whether shoulder and elbow supports can expand the detection threshold in horizontal HR. A user study revealed that shoulder supports significantly increase the DT, offering a practical, stimulus-free method to enhance HR. These findings highlight the potential of leveraging joint constraints to improve immersion without relying on external stimuli.