Explosives tracers

[holland@CS.ColoState.EDU (douglas craig holland)]

> 
> > Steganographic signatures.  Similarly, signatures are being put into
> > explosives  (although they are somewhat traceable already) by using 
> > various mixtures of trace elements.
> 
> I believe that they also use small (microscopic) color coded chips of
> plastic.  There is an OTA report on this topic with a name something
> like "Taggants in Explosives".  I believe that the report is about 10
> years old.
> 
> 
I remember hearing about how one congress member removed the taggants
from a sample of gunpowder using tweezers during a terrorism hearing.
Taggants can't really be relied upon.

Doug