| 摘要 |
The invention concerns a data transmission device comprising a unit including an identification card (7) and its holding casing (1), into which the recorded data is read with a reading device from a distance. The identification card (7) attachable to the holding casing (1) is provided with the desired identification data known per se and the holding casing (1) is provided with transmission, receiving and recording means (4, 5) for the data, said means cooperating with the corresponding means of the reading device.
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