Officials at the International Colored Gemstone Association, for instance, are pushing to create a system to trace the origins of colored gems.

WSJ: Secret Rocks and Gem Hunters | WSJ.Money Summer 2013

His recommendation that Britain switch to an alternative-vote system sank without trace.

ECONOMIST: The daily take

In Northern Ireland there is a system that allows you to trace back to the farm and even when the produce was harvested, Elliott says.

BBC: Horsemeat scandal: How often does food fraud happen?

The trace of this electrical charge left behind in the fingerprint is imaged using an electric field microscopy system.

FORBES: Can Forensic Scientists Tell How Old A Fingerprint Is?