http://www.guardian.co.uk/uk/2009/jul/12/hair-tests-spot-terrorist
- Scientists have devised a hair test that the government hopes will help check the alibis of terrorist suspects and asylum seekers. They believe new laser scans of individual hair strands can reveal where a person has been living for the previous two months.
- Researchers at the National Metrology Institute in Teddington, Middlesex, have developed the laser to measure tiny changes in hair that are caused by diet or the immediate environment.
- The decision of the government to back the plans worries human rights groups, which believe that the tests could be easily abused.
- Each region across the world is believed to have a unique isotopic profile, reflected in the food, water and air particles. Anyone who visits a specific region is thought to absorb elements from the immediate environment.
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