In the AOL debate between Barlow and Denning, Barlow asserted that Clipper increases the gov't capability to do traffic analysis. Can someone please describe the technical basis for this claim? (No rhetoric please, just the technical background...) The LEAF can be decrypted with just the family key; from what's been disclosed so far, local law enforcement agents will be able to do that without contacting the escrow sites. The LEAF contains the unit id of the chip, independent of what phone number it's being used from, or (in the case of cellular phones) where in the country it is. The ordinary signaling channels are (often) encrypted, and in general use a different path than the call itself.