Half a croissant, on a plate, with a sign in front of it saying '50c'
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Destructive Identification

Laser ablation of sacrificial material.
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A means of confirming the identity of a target, this is achieved by directing a laser pulse at a section of the targets surface that is designed to produce a specific set of wavelengths when super heated.

For instance a section of carbon fiber composite doped with a combination of metal salts.

Using spectral analysis and a variety of salts would allow for significant bit depth.

The primary application is to surprise an opponent with a unique form of security until it can be figured out.

theinvolvement, Nov 06 2017

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       mass-spec?   

       MALDI-TOF would provide plenty of bits of information, and is laser ionised.
Loris, Nov 06 2017
  

       // laser ionised //   

       ICP spectrometry can work with smaller samples and gives clearer results ... or use a big quadrupole MS and a plasma source. Neither need sample prep.
8th of 7, Nov 06 2017
  

       //MALDI-TOF// Shalom aleichem!
MaxwellBuchanan, Nov 06 2017
  

       "Next year, in Jerusalem..." ?
8th of 7, Nov 06 2017
  

       [theinvolvement], you opened your user account in 2009, have posted no annotations on other ideas, posted one idea in 2014 and only now this idea. Regardless, welcome to the Halfbakery.   

       Perhaps a different category other than vehicle: general ?
normzone, Nov 06 2017
  
      
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