Microparticles containing fluorescent dyes, microscopic metal, holographic and chemicals, including or labeled with composite information for use in relation to the security of articles, goods, vehicles, buildings or premises; microparticles containing fluorescent dyes, microscopic metal, holographic and chemicals, including or labeled with composite information in relation to prevention or detection of unauthorised removal of articles or goods from vehicles, buildings or premises, of vandalism of articles, goods, buildings or premises, of unauthorised acts against public property or personnel, or of counterfeiting of goods; Chemical solutions comprising chemicals for use in industry and science containing, including or labeled with composite information for use in relation to the security of articles, goods, vehicles, buildings, personnel or premises, the prevention of counterfeiting and product tracing and identification and crime prevention; Chemical solutions comprising chemicals for use in industry and science containing unique forensic coding markers used in law enforcement; Structural parts and fittings for the aforesaid goods