The phrase references particulate matter, formulated to be innocent, used for surveillance or monitoring functions, with specific emphasis on its accessibility in a selected geographic location. For example, a house owner may seek for a substance protected for pets and kids to discreetly observe animal motion round their property.
The worth of using such supplies lies within the potential to collect data subtly and ethically, relying on the appliance and related rules. Traditionally, comparable substances, although not all the time unhazardous, have been employed in crime scene investigations and scientific analysis to hint motion patterns and interactions. Its attraction stems from the will for unobtrusive knowledge assortment.