fairness. Even though the average wait over time is the same, customers tend to notice lines that are moving faster than they are compared to other lines moving more slowly. Putting up signs that deliberately overestimate the wait time, to always exceed customer expectations. Cutting in line, also known as queue-jumping, can generate a strong negative response, depending on the local cultural norms. Virtual Physical queueing is sometimes replaced by virtual queueing. In a waiting room there may be a system whereby the queuer asks and remembers where their place is in the queue, or reports to a desk and signs in, or takes a ticket with a number from a machine. These queues typically are found at doctors' offices, hospitals, town halls, social security offices, labor exchanges, the Department of Motor Vehicles, the immigration departments, free internet access in the state or council libraries, banks or post offices and call centres. Especially in the United Kingdom, tickets are taken to form a virtual queue at delicatessens and children's shoe shops. In some countries such as Sweden, virtual queues are also common in shops and railway stations. A display sometimes shows the number that was last called for service. Restaurants have come to employ virtual queueing techniques with the availability of application-specific pagers, which alert those waiting that they should report to the host to be seated. Another option used at restaurants is to assign customers a confirmed return time, basically a reservation issued on arrival. Virtual queueing apps are available that allow the customers to view the virtual queue status of a business and they can take virtual queue numbers remotely. The app can be used to get updates of the virtual queue status that the customer is in. Alternate activities A substitute or alternative activity may be provided for people to participate in while waiting to be called, which reduces the perceived waiting time and the probability that the customer will abort their visit. For example, a busy restaurant might seat waiting customers a bar. An outdoor attraction with long virtual queues might have a side marquee selling merchandise or food. The alternate activity may provide the organisation with an opportunity to generate additional revenue from the waiting customers. Mobile All of the above methods, however, suffer from the same drawback: the person arrives at the location only to find out that they need to wait. Recently, queues