Bar codes have already served for many years as a cheap, reliable and accurate method of identifying and tracking items and people. Every single asset is marked with a plastic, easily washable and abrasion resistant label (or a security label) with a bar code, in which the information about the inventory asset number is encoded and a record of the item is created in the database. Then the stock-taking is done by scanning the bar codes of individual asset items with mobile terminals. The system immediately records the real status of the stock into the terminal memory including date and time of the stock-take, and the worker's name. At the end of the process the data are transmitted into the PC application updates the inventory and complete tabulated results are instantly at your disposal.