Jumia Nigeria Also known as promotional codes, coupons or vouchers, discount codes are alphanumeric vouchers that, like other tools in electronic format, have become part of the daily lives of Internet users. Discount codes are a true savings method equal to paper coupons. Unlike coupons or vouchers which are mainly paper vouchers, discount codes are a sequence of numbers and letters that can be used in a online shopping cart in Nigeria as well as international stores. First created in the United States in the early 2000s, in conjunction with the development of e-commerce, promotional codes experienced their first wave of success between the years 2008-2010, the period in which Groupon became, in a stable and indisputable way, one of the main international operators of services through paper vouchers. On the same wavelength, many international e-commerce sites started issuing electronic discount codes that can be used by their users, just like a paper voucher provided by the physical store in your city to be used for your next purchase.