Cellular Bioengineering, a company out of Honolulu, Hawaii, has developed a method to manufacture tiny silicon dioxide (SiO2) particles, called TruTags™, each of which can have a unique light signature when observed with a special device. Being cheaper to manufacture and safe for consumption, the company believes that TruTags may become regular practice to tag not only drugs, but also foods, and maybe even things like toothpaste and diaper creams. (source: Medgadget)
