Just in the hospital mistakes can happen fast concerning medicament, if it is the wrong drug, the wrong dose, or, however, also the wrong combination. For example, it came in a university hospital to an incident with which after a joint operation the medication was prescribed wrong measured.2 Though this incident was not deadly, however, it came to life-menacing complications. What would have happened, however if an employee had mistaken two looking alike ampoules for colorless liquid with each other, or if the hospital chemist's shop on a product of another manufacturer changes who produces similarly looking drugs of another drug which show, however, quite another composition of the drug and obtain therefore another effect on the organism of the patient. The number of the mistakes they are able to enter is huge who can enter in spite of the best possible education and experience of the nursing staff, at least, every third stationary patient gets the wrong drug according to statistics in Austria. The security management in the hospitals or nursing homes can reduce here by the possibility of a technically supporting drug assignment the risk of the wrong assignment. Moreover every patient receives a bracelet with a bar code with installation to the stationary treatment. This bar code identifies the patient on the one hand as a person, on the other hand, the medicaments assigned to him are checked with the assignment. Among the rest, the patients get their drugs whose packaging is also provided with a bar code which is identically with the bar code of the patient, only after a scan examination. This means the nursing staff scans first the code in the bracelet of the patient over a hand scanner and afterwards the bar code on the e.g. drug box. With a positive correspondence there sounds an acoustic tone and a green signal light reveals the nursing staff that the medicaments really assigned to the patient are given.