The lecture performance explores existing projects using different forms of motion capture and haptic sensors. Drawing on media studies and feminist theory, the presentation expands notions of virtual and physical bodies in their intra-action and suggests to include patterns of difference to give hints about the nature of sensing mechanisms, affective responses, and the diffractive processes that come into being. How does the decision to sense produce affect? Which role does a particular kind of sensing agent play in our perception? How do the intrinsic characteristics of such agent and its limitations influence the results?