Feb 7 2010 by Coreena Ford, Sunday Sun
It is made by Kent-based Selectamark and is already being used in Holland.
Now Network Rail is considering using SelectaDNA in the UK.
A Selectamark spokeswoman said: “This technology provides police with robust and immediate forensic proof of where stolen metal has come from, thus enabling them to prosecute criminals using an indisputable chain of evidence.
“The detection and analysis technology can also be made available to scrap metal dealers so they can check for markings on metal being offered to them.
“As far as the UK is concerned, our sales team are currently in advanced negotiations with rail and other industry sectors.
A Network Rail spokesman confirmed they were considering using SelectaDNA.