For all I know, trap device could be FBI speak for USB hard drive. He needs to plug in the hard drive so he can copy the data on to it. (I am aware the FBI has other, much more capable network intercept devices. I suspect the term pen/trap device is standard jargon for anything that gets installed on site regardless of capability.)
Your suspicion is incorrect. "Pen/trap device" refers to a "pen register" or "trap and trace device" as defined by 18 USC §3127(3-4):
(3) the term “pen register” means a device or process which records or decodes dialing, routing, addressing, or signaling information transmitted by an instrument or facility from which a wire or electronic communication is transmitted, provided, however, that such information shall not include the contents of any communication, [...]
(4) the term “trap and trace device” means a device or process which captures the incoming electronic or other impulses which identify the originating number or other dialing, routing, addressing, and signaling information reasonably likely to identify the source of a wire or electronic communication, provided, however, that such information shall not include the contents of any communication;
Wouldn't a hard drive onto which addressing information is recorded be a pen register?
Clarification: point being the language of the law doesn't permit the FBI to give you a hard drive. They have to call it a pen register, then they can give it to you.
The initial request states "pen/trap device" not just "pen register" so your insistence on only pen part is irrelevant. The initial secret court order demanded more.
