With a sexy splash page — a young woman in short shorts waving her arms before a TV screen — PrimeSense and hardware maker Asus are inviting consumers to connect with kinetics through Wavi Xtion, a three-dimensional technology that couples cameras, motion sensors, and televisions with personal computers. It also reminds several tech pundits of Microsoft’s Kinect, which is no wonder — PrimeSense developed Kinect’s 3D motion-sensing technology.