nonperceptibility
Nonperceptibility refers to the property of being not perceivable by an observer, whether through human senses or through measurement devices. It denotes stimuli, signals, or objects that lie below the detection capabilities of a given observer, or that have been specifically designed to avoid detection. The concept is used across psychology, sensory science, engineering, and security.
In sensory psychology, nonperceptibility relates to thresholds: the absolute threshold is the minimum intensity at which
In technology and design, nonperceptibility describes attempts to reduce detectability or observation. Examples include stealth design
Nonperceptibility is inherently relative: an observer with different capabilities or context might detect what another observer
Related concepts include sensory thresholds, detectability, invisibility, and concealment, as well as privacy-by-design methods and signal