Often annoyed by the long queue at the security check in the airport and sometimes worry about the possibility you could miss the plane because of the long queues?
If only you were in Downtown Austin in Texas, these concerns may be reduced with the help of new technologies that take advantage of their Wi-Fi signal or Bluetooth to monitor the length of the queue at the security check.
This new system utilizes Wi-Fi signal or Bluetooth from gadgets carried by passengers where the system will record any signal that there will then be put into a database so that it can estimate the length of the queue at each "line" that exists.
The principle works is quite simple, in every line of the queue will be installed such penditeksi door signal, when we pass through the door and signal Wi-Fi or Bluetooth connection is active, the system will automatically record it and then the system can predict how many people in the queue and estimate how long the queue, so when we are done with the security check, the system will pull the data out of the system so that incoming data can be said to be sufficiently accurate data (real time).
The problem may not be as accurate as we want because there may be many passengers who are not turning on Wi-Fi or Bluetooth so that it will not be monitored by the system, but okay than engga there so really we do not know at all how long queues at security check .
Oh yes, do not worry about privacy issues because the existing system only records data Wi-Fi only, exact MAC address (media access control) on the phone.
source