| 摘要 |
Each noting position (31) is aligned with a corresponding letter (21) in the letter series (2). A card user can select his or her own memory word comprising a number of letters which is at least equal in size as the number of symbols in a code to be recorded in a reading-protected manner on the card. The user can note his or her symbol code symbols in sequence in a noting positon row centrally to the memory word successive letters (21) in the letter series (2). - The card user then fills in the remaining noting positions (31) in the series (3-7) with randomly selected and different symbols of the same type as those in the symbol code. The card (1) incorporates several different parallel series (3-7) of symbol noting positions (31), whereby other symbol codes can be noted in a reading-protected manner on the respective noting position rows of the user, on the basis of the same memory word. The letter series incorporate an alphabet. |
