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   » » Wiki: Self-checkout
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Self-checkout (also known as self-service checkout and as semi-attended customer-activated terminal, SACAT) machines provide a mechanism for customers to process their own purchases from a . They are an alternative to the traditional -staffed checkout. The customer performs the job of the cashier themselves, by scanning and applying payment for the items.

As of 2013, there were 191,000 self-checkout units worldwide, and the number was estimated to reach 325,000 units by 2019. The machines were invented by David R. Humble.


Description
In self-checkout systems, the is required to:
  • scan the ;
  • input the types of items such as fruit and vegetable (usually with a display);
  • weigh them, if applicable;
  • and place all scanned items into a "bagging area". The weight observed in the bagging area is verified against previously stored information to ensure that the correct item is bagged, allowing the customer to proceed only if the observed and expected weights match.

Payment by various methods may be accepted by the machines: card via , /, electronic cards, via slot and , and in-store gift cards where applicable. Most also have barcodes and can be scanned the same way that items are scanned, although some require entry by a member of staff.


Advantages
The benefit to the retailer in providing self-checkout machines is in reduced labour costs: one attendant can often run four to six checkout lanes with the work of the cashier now being assumed by the customer. The size of a self-checkout machine is also smaller than a traditional checkout manned by a cashier; thus, a store can save space, which could be used for more shelves, display cabinets or additional checkouts.

Customers who do not want to interact with the cashier can use the self-checkout.

Self-checkout can also sometimes be faster than using a cashier lane. This can reduce the length of checkout lines (British: queues) and wait times. In a survey by NCR, 42% of customers said they liked the convenience of self-checkout, while 39% said it was faster than the cashier-assisted line. 90% of those surveyed responded as being users of self-checkout, with 7% of respondents saying they will always use self-checkout regardless of store lines and number of items. Survey respondents in Italy and Australia said they "always use self-checkout" at a rate of 13% and 9% respectively.


Disadvantages

Shoplifting
Self-checkout is vulnerable to some techniques. In some cases the machine will pick up the attempt to steal, or cause the shopper to alter their behavior (e.g. an item can be put not on the scales but somewhere else where it should not be put, and this may be noticed by the system supervisor). For example, in 2007, a man was charged with replacing the tag of a plasma TV with a $4.88 DVD, and trying to purchase it through self-checkout.

Studies suggest that a large proportion of shoppers are tempted to shoplift due to the relative ease of fooling self-checkouts. For example, a person who (initially without intent to steal) does not scan an item, may remember that this was easy, and fail to scan other items deliberately. A 2012 survey with 4,952 respondents in the UK found that a third of shoppers had stolen this way, with around a quarter of the remainder stating they were deterred by the risk of detection. Non-barcode items such as produce, and store staff overriding (or ignoring) checkout alerts, were singled out as vulnerabilities, and poverty was not seen as a major factor. How cheating at checkouts is turning us into a nation of self-service shoplifters - Daily Mail online, 26 April 2012 The founder of one store video surveillance system estimated that "Theft — intentional or not — is up to five times higher with self checkout than when cashiers are working", although behaviour of shoplifters is becoming well known, and stores are now better at shoplifting detection. A 2014 survey in of 2,634 respondents confirmed the same general findings, but commented that the cost of additional theft was evidently seen as "tolerable" compared to the cost of other processes, such as manned checkouts, and harm due to poorer customer service arising from the slowness of manned versus automated checkouts.


Customer effort
They require more work from the customer, who may prefer to shop elsewhere and have the work done for them. They also annoy the customer when something goes wrong.


Customer interaction
Self-checkouts are also criticized for reducing the possibilities for customers and store staff to interact, and adversely affecting customer service in general. However, one advantage is that self-checkouts can, if the necessary investment is made, provide a partly multilingual service. (It cannot be fully bilingual unless the goods are labelled in all the relevant languages, which is often not the case.) For example, 's Welsh stores which can serve customers in , whereas finding enough fluent Welsh-speakers as staff can be difficult because in some areas only a small proportion of local people have Welsh as their first language. Self-checkout lanes may lack some rather basic customer interactions, like informing the customer that a coupon was not accepted, and why.


Low reliability
Being more complex, self-checkouts are more prone to failure. For example, they use scales to weigh goods in the bagging area, and if the scale fails, the machine does not work. Also, in a manned checkout lane, any simple problems like lack of receipt paper would be immediately fixed by the operator, while self-checkouts may not be fixed for quite some time. This lack of reliability can be compensated for by having excess lanes available or enough staff on hand to perform immediate maintenance.


Scanning while shopping
An alternative system (self-scanning) consists of a portable barcode scanner that is used by the customer to scan and bag items while shopping. When the customer has finished shopping, the scanner is brought to a checkout , where the information from the barcode scanner is downloaded to the kiosk, usually in conjunction with a . The customer pays and receives a receipt at the checkout kiosk. The integrity of the system is maintained through the use of random audits or . owned , Sam's Club allows customers to download an app and scan items into their cart using a mobile application.

In December 2016, Amazon announced a bricks and mortar store in under the name , which uses a variety of cameras and sensors in order to see what customers are putting into their shopping bags. The customers scan a when they enter the store through a companion app, which is linked to their Amazon.com account. When the customer exits the store, the items in their bag are automatically charged to the account.


Hybrid systems
Suppliers like ITAB, , and others have manufactured hybrid checkout systems that allows the checkout counter to be switched between either a cashier operated mode or a customer self-service mode.

HybridCheckout from PeoplePos has taken the hybrid concept further by allowing the cashier and customer to do parallel and simultaneous scanning. This is achieved by adding a customer scanning area next to the cashier scanning area. The HybridCheckout solution allows for an increased throughput and a combination of cashier operated scanning and customer self-service.


Open systems
In 2010, the -self-check project was announced. By using hardware and open source software, this library self-checkout system costs less than one-tenth of the commercial version.

A Java based open source self check client for libraries, which has been used at the University of Oxford, Oxford Developments at GAUG 2002 Archived from the original on 24 November 2012 is also available under a GPL v3 license.


Criticisms
reported in December 2009 on the rise of self-service tills and how error messages like 'unexpected item in the bagging area' are becoming part of the new shopping experience and even given rise to bearing the slogan.

Self-serving checkout counters drastically reduce the demand for low skilled workers, using technology to eliminate a key human player in the marketplace. The wide spread implementation of self checkout services will decrease in available jobs for low skilled checkout workers, some of whom have depended on such jobs for a living.


Regulation
An appeal court in confirmed in September 2013 a bill banning sales of alcoholic beverages in self-service checkouts. The law requires alcohol only to be sold in face-to-face transactions with store clerks.


See also


Further reading
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