Snappy queue management system is used to control queues. Queues of people form in
various situations and locations in a queue area. The process of queue
formation and propagation is defined as queuing theory. Where queues form in
unpredictable locations and/or extend beyond a relatively small queue area,
overhead detector based queue measurement systems cannot be effectively used.
Alternative technology solutions using wide area queue sampling are effective
in these situations. One method is using Bluetooth detection from mobile
telephones held by people in the queue. Although a sampling technique, as
typically 10 – 30% of telephone have active Bluetooth at any one time, [citation
needed] it gives a reasonably accurate measurement of average queue wait times
where long queues are present. A precise but more expensive method is the use
of a people counter
