Abstract: A mechanism for conveniently attaching a mobile, portable or handheld device to a user. The mechanism includes a retractable line implement for attaching the mobile device to an object, a user, a monitored or tracked subject. The mechanism also includes a reel device for holding the line implement when not in use, a reel winding mechanism for manually or automatically retracting the line implement, a clip mechanism for adjusting a length of the line implement and hold the line implement to a preferred length, and a tension point segment that breaks apart when excessive force is applied to the mechanism to prevent injury to a user.