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单词 pen register
释义
pen register
n.
A monitoring device that records addressing or routing information, such as phone numbers or network addresses, about outgoing electronic communications from a particular source, but does not record the message contents.

[Probably originally a term from electric telegraphy making reference to the pens or styluses that recorded messages on paper tape in the register, or recording device, of the telegraph.]
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更新时间:2025/12/16 2:24:36