| 摘要 |
A method selectively distributes data to a set of devices linked by a networ k, where each device has at least one unique identifier. The method comprises selecting devices to be members of the set, the set devices being selected t o receive the data based on the at least one unique identifier, and distributi ng data to at least the selected devices, the data including at least one matching key for matching at least a portion of the unique identifier of selected devices. The unique identifier is a device hardware identifier, bei ng a string of bits and the key correlates to at least a portion of the string of bits.
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