Forensic cross-contaminants (was Re: [alito at organicrobot.com: [>Htech] yahoonews: 2500 micron^2 antennaless RFID chips])

[R.A. Hettinga]

At 4:19 PM +0100 2/23/07, Eugen Leitl wrote:
>Hitachi shows off powder-sized smart tag

This reminds me of the gunpowder/explosive taggants debate.

Essentially, once tags get small enough, they blow around so much that
they're forensically useless, especially in places where a lot of different
taggants show up together, like, say, a forensic lab. :-)

Remember how the claim was made a decade or so ago, that at small enough
concentrations that just about every bill of any cash denomination had
cocaine on it if it had traded hands more than a few times?

Same idea.

Cheers,
RAH

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R. A. Hettinga <mailto: rah at ibuc.com>
The Internet Bearer Underwriting Corporation <http://www.ibuc.com/>
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