The phrase references particulate matter, formulated to be innocent, used for surveillance or monitoring functions, with specific emphasis on its accessibility in a particular geographic location. As an example, a home-owner may seek for a substance protected for pets and youngsters to discreetly observe animal motion round their property.
The worth of using such supplies lies within the means to assemble info subtly and ethically, relying on the applying and related laws. Traditionally, related substances, although not all the time unhazardous, have been employed in crime scene investigations and scientific analysis to hint motion patterns and interactions. Its enchantment stems from the will for unobtrusive knowledge assortment.