One place where queues are not always enforced are bars, where people compete for attracting the attention of servers. People who jump the queue at the bar (even without meaning to) cause considerable frustration to customers who have been overlooked. However, one solution that has been proposed is the use of facial recognition technology, which will make getting drinks at busy bars faster and fairer. The system organises customers into a ‘virtual’ queue to manage crowds, and identifies who has been waiting the longest.

Not only that, the security-style system will also help people get served more quickly by advising younger-looking patrons who may be underage to get their identification ready, and let staff know if they have already been checked. What might be the advantages and disadvantages of bars using this system?