Abstract
It is brought results over of researches of spots raising of marking by the electric digits of small ener- gies (to 10 J) in a liquid with the superficially-active matters. Thus electric digits were carried out in a pack with certain frequency of impulses and certain pauses between the parcels of packs. Composition of super- ficially-active matter is certain, but changeable in the process of marking. Tracks of such marking are relia- bly read due to the change of picture of the magnetic field of the marked good in the area of raising of spots of marking. Technology of reading of spots is described in a brand and elements of apparatus decisions of devices of reading.