Grumpy Old Geeks Topics Facial recognition in bar queues Topic Facial recognition in bar queues 2 mentions in 1 episode The hosts discuss a system that displays patrons’ places in a virtual queue. Mentions 366: Spider People Aug 7, 2019 16:09 An AI bar system makes sure patrons are served in the right order. 17:26 A number appears above each customer's head, which represents their place in the queue.