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 illustration, a house owner would possibly seek for a substance secure for pets and youngsters to discreetly observe animal motion round their property.
The worth of using such supplies lies within the capability to collect data subtly and ethically, relying on the appliance and related laws. 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 need for unobtrusive knowledge assortment.
