The Family Key

[Phil Karn]

At 08:29 AM 4/21/93, Harry Shapiro wrote:
>Thus, the NSA will be able to maintain an active traffic pattern
>analysis of ALL communications sent via the Clipper chiped devices.
>
>I think in many ways that traffic watching can and does often reveal
>more information about someone than at time listening in to what
>is actually being said.

I think this is an extremely important point. The US precedents regarding
traffic analysis (e.g., telephone "pen registers") are very anti-privacy.
I would not be at all surprised to see decisions saying that law enforcement
could use the Chipper ID anyway they liked, without a warrant.

Phil