  Wireless devices inherently have a non-uniform distribution of energy from
their antenna or antennas. The shape that this forms is commonly called a
radiation pattern or antenna pattern. We demonstrate that orientation can be
estimated without the cooperation of the target device despite only having a
small number of RSS measurements per packet. We do this by applying bounds to
the amount of rotation in the time interval between packets. Using simulations,
we show that this method can achieve a mean orientation error as low as
7.6{\deg}. We then perform a security analysis to demonstrate the method's
resistance to spoofing. This paper focuses on consumer wireless devices where
patterns are not deliberately highly directional and scenarios that cannot rely
on contrived movement patterns of the entities involved, which is unrealistic
or impractical in many settings. Our work concentrates on existing wireless
systems and infrastructure common in domestic, office, and commercial.
