Recycling by product massive number of types of plastic, they each carry a resin identification code, and must be sorted before they can be recycled. This can be costly; while metals can be sorted using electromagnets, no such 'easy sorting' capability exists for plastics. In addition to this, while labels do not need to be removed from bottles for recycling, lids are often made from a different kind of non-recyclable plastic. To help in identifying the materials in various plastic items, resin identification code numbers 1-6 have been assigned to six common kinds of recyclable plastic resins, with the number 7 indicating any
National identification number to report payment of wages to Finnish Tax Administration, the pension funds, etc. The number is shown in all forms of valid identification: During 1964–1970 the personal identity code was known as "sosiaaliturvatunnus" (SOTU, Social Security number). The term is still widely in use unofficially (and incorrectly). In France, the INSEE code is used as a social insurance number, a national identification number, for taxation purposes, for employment, etc. It was invented under the Vichy regime. In Germany, there is no national identification number in the full meaning of the term. Until 2007 only decentralized databases were kept by social