limits of watermarking (Re: First Steganographic Image in the Wild)

[Michael Shields]

In article <3BCD4DF7.204FD708 at algroup.co.uk>,
Ben Laurie <ben at algroup.co.uk> wrote:
> b) Even if physical media goes away, individual watermarking blows away
> multicast - and broadband will just never work without that.

It is true that broadband isn't viable if it requires a high-bandwidth
from one source to every end user; the stream has to be exploded at
some replication points near the viewers.  But that replication
doesn't have to be done by the routers; it can also happen at a
distributed network of servers, which can be intelligent enough to add
watermarking at a cost on the same order of the cost to provide SSL.
This sort of server-based multicasting is widely deployed today by
Akamai and others, and has been far more successful than router-based
multicasting.
-- 
Shields.



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