Wireless Local Area Networks (WLAN), as the most widely used indoor positioning
technology, can localise users by measuring the Received Signal Strength (RSS) from multiple
Access Points (AP). The challenges of this approach are that measuring RSS can be easily
affected by several parameters, including how the users hold the device, e.g. device orientation,
and that accurate maps of RSS are required. This paper (A) introduces a bell-curve model of
signal attenuation from orientation, allowing more accurate RSS measurement, and (B)
identifies collinearity issues with a path-loss model used to automatically create RSS maps,
suggesting a simpler and more robust alternative
