All things under the TECHNATE will be controlled, numbered by a modified DEWEY DECIMAL SYSTEM, as used in libraries now. The energy certificate will have on its face the s*x, age, job, place of birth, address, where he works, and the worker's number, all recorded by this system. There are also places for purchases, four, to be exact. When one makes up his mind to buy something, he goes to the store (an example) and buys a pair of shoes. By means of a photoelectric machine (already developed) the salesclerk would punch out numbers and the certificate would come out bearing, neatly perforated: "34.46...11.E.728.../..H76302../... Z.97321.../...205...21.05." All this means that the article was a pair of low shoes, made by the leather sequence, that they were men's shoes, width E, last number 7

