(KMOV.com) -- The St. Louis County Police Department has implemented a marking system to be used as a security measure for precious metals and appliances.
The county-wide system uses a marker creating invisible marks that can only be seen under ultraviolet fluorescent lighting.
“The original start of the program in January of this year in small sections of the county saw great success and it was requested to be expanded,” said Brian Schellman with the St. Louis County Police Department.
Police say the markings should deter theft and assist in the return of stolen items. St. Louis County Detective Danny Kiem told News 4 the idea for identification system came to him in the middle of the night. Authorities told News 4 stolen copper can be sold at a scrap yard for around $2,000 per pound and proving where the metal came from is often hard.
Anyone interested in marking their property should contact the nearest St. Louis County precinct.