Proof of purchase is often required for sales promotions and manufacturer rebates as evidence that the customer purchased the product. When multiple purchases are required to redeem these rewards, it is referred to as a premium incentive or collector mechanic.
Traditional proof of purchase systems required the consumer to send some portion of the packaging, as defined by the product's manufacturer, or the sales invoice.
Unique codes printed on packaging are increasingly used as a mechanism for proof of purchase. Consumers can submit the code electronically for validation against a central database, thus establishing proof of purchase. Such systems allow manufacturers to develop a direct relationship with the consumer, for use in short term sales promotions, loyalty systems and collection and profiling of consumer data.
Stores which accept returns may require proof of purchase, often in the form a receipt
Famous quotes containing the words proof of, proof and/or purchase:
“The proof of a poet is that his country absorbs him as affectionately as he has absorbed it.”
—Walt Whitman (1819–1892)
“He who has never failed somewhere, that man can not be great. Failure is the true test of greatness. And if it be said, that continual success is a proof that a man wisely knows his powers,—it is only to be added, that, in that case, he knows them to be small.”
—Herman Melville (1819–1891)
“We are told to maintain constitutions because they are constitutions, and what is laid down in those constitutions?... Certain great fundamental ideas of right are common to the world, and ... all laws of man’s making which trample on these ideas, are null and void—wrong to obey, right to disobey. The Constitution of the United States recognizes human slavery; and makes the souls of men articles of purchase and of sale.”
—Anna Elizabeth Dickinson (1842–1932)