A building for the retail sale of goods. Until the late 19th century, shop development had been almost static but with the growth of manufactured goods and the concentration of population in big towns came the development of the department store and the chain store. The world's first department store was the Bon Marche in Paris 1852. Macy's opened in the USA 1858, Whiteleys in the UK 1863, and Wertheim in Germany 1870. The main innovation was goods at set prices. The chain stores took the form of many shops scattered in different towns or counties, able to buy wholesale in such quantities that prices could be lowered below those of smaller competitors. As a development of wholesale purchase came direct links with factories producing goods, often under the same ownership, which further cut costs, and even the elimination of the shop itself by direct mail or mail order. Self-service had been originated in the USA many years earlier by Clarence Saunders. It developed rapidly after World War II as a result of staff shortages and labour costs, and was introduced in supermarkets for groceries and in hypermarkets outside towns. In the USA in the 1970s there developed the `controlled shopping environment' of an air-conditioned enclosed mall of up to 250 shops in carpeted arcades, often on several levels, with music, free parking, cinemas, restaurants, and childcare facilities, for example, Woodfield Mall, Chicago. The idea was adopted in the UK and elsewhere. Trading stamps, originating in Britain about 1851, were developed in the USA and re-exported to the UK (Green Shield) in 1958, but became a casualty of the recession and changed shopping habits in the late 1970s. They were reintroduced in 1987. Gradually being introduced are direct debit from a customer's bank account by use of a plastic card inserted in a computer terminal at the point of sale (an example of EFTPOS), and laser check-outs, which automatically `read' a bar code on the packaging of the goods and deliver an itemized bill to the customer, as well as recording for the store the deduction of the item from shelf stock.