A method of determining a destination of an individual carrying a mobile device, the method comprising: detecting a first sequence of Bluetooth signal strengths between a mobile device and one or more access controls over a first time period, wherein the one or more access controls are wireless locks; detecting an access request from the mobile device to a final destination access control of the one or more access controls along a first route when the first time period has expired; associating the first sequence of Bluetooth signal strengths over the first time period with the first route to the final destination access control; detecting a second sequence of Bluetooth signal strengths between the mobile device and one or more access controls over a second time period; detecting a first walking speed of an individual carrying the mobile device at a first instance during the first sequence of Bluetooth signal strengths; detecting a second walking speed of an individual carrying the mobile device at a second instance during the second sequence of Bluetooth signal strengths; and determining that the second sequence of Bluetooth signal strength correlates with the first sequence of Bluetooth signal strengths, determining that the detected walking speed trend at the second instance during the second sequence is similar to the detected walking speed trend at the first instance during the first sequence and occurs at a chronological point about equal to the first instance during the first sequence, and thereby confirming that the second sequence of Bluetooth signal strength correlates with the first sequence of Bluetooth signal strengths and that the mobile device is on the first route to the final destination access control during the second time period. detecting a first sequence of Bluetooth signal strengths between a mobile device and one or more access controls over a first time period, wherein the one or more access controls are wireless locks; detecting an access request from the mobile device to a final destination access control of the one or more access controls along a first route when the first time period has expired; associating the first sequence of Bluetooth signal strengths over the first time period with the first route to the final destination access control; detecting a second sequence of Bluetooth signal strengths between the mobile device and one or more access controls over a second time period; detecting a first walking speed of an individual carrying the mobile device at a first instance during the first sequence of Bluetooth signal strengths; detecting a second walking speed of an individual carrying the mobile device at a second instance during the second sequence of Bluetooth signal strengths; and determining that the second sequence of Bluetooth signal strength correlates with the first sequence of Bluetooth signal strengths, determining that the detected walking speed trend at the second instance during the second sequence is similar to the detected walking speed trend at the first instance during the first sequence and occurs at a chronological point about equal to the first instance during the first sequence, and thereby confirming that the second sequence of Bluetooth signal strength correlates with the first sequence of Bluetooth signal strengths and that the mobile device is on the first route to the final destination access control during the second time period. <EOS>