| 摘要 |
The invention concerns systems wherein electronic labels each associated with a product exchange data by means of a writing/reading device. In order to enable writing simultaneously a message common to a certain number of labels, the method consists in making the writing/reading device (56) write a message (54) for selecting writing certain labels listed by an identifying code (543) prior to sending the message. Moreover, the method consists, prior to the selection message, in transmitting the signal to all labels of the field to cause them to operate in reception only.
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