Wearable computers typically differ from traditional mobile devices in that their usage and interaction location takes place on the user's body. In these contexts, gesture interfaces may become preferred over traditional input methods, as their small size renders touch-screens or keyboards less appealing. Nevertheless, they share many of the same social acceptability obstacles as mobile devices when it comes to gestural interaction. However, the possibility of wearable computers to be hidden from sight or integrated in other everyday objects, such as clothing, allow gesture input to mimic common clothing interactions, such as adjusting a shirt collar or rubbing one's front pant pocket. A major consideration for wearable computer interaction is the location for device placement and interaction. A study exploring third-party attitudes towards wearable device interaction conducted across the United States and South Korea found differences in the perception of wearable computing use of males and females, in part due to different areas of the body considered as socially sensitive. Another study investigating the social acceptability of on-body projected interfaces found similar results, with both studies labelling areas around the waist, groin, and upper body (for women) to be least acceptable while areas around the forearm and wrist to be most acceptable.